Parsing of json fails if item data component removal syntax is used (e.g. !minecraft:enchantments in Wind Charge books from Trial Spawners)

[Phoenix616]

When trying to parse a json component that includes a key that uses the item data component removal syntax in a hover item specification with a exclamation mark in front of the key (e.g. !minecraft:enchantments in Wind Charge books from Trial Spawners, this is not set on Creative items!) an exception is thrown: Non [a-z0-9_.-] character in namespace of Key[!minecraft:enchantments] at index 0 ('e', bytes: [101])

A full stacktrace using adventure 4.17.0

de.themoep.ShowItem.libs.kyori.adventure.key.InvalidKeyException: Non [a-z0-9_.-] character in namespace of Key[!minecraft:enchantments] at index 0 ('e', bytes: [101])
	at ShowItem.jar/de.themoep.ShowItem.libs.kyori.adventure.key.KeyImpl.checkError(KeyImpl.java:58) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.libs.kyori.adventure.key.KeyImpl.<init>(KeyImpl.java:48) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.libs.kyori.adventure.key.Key.key(Key.java:137) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.libs.kyori.adventure.key.Key.key(Key.java:111) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.libs.kyori.adventure.key.Key.key(Key.java:88) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.libs.kyori.adventure.text.serializer.gson.ShowItemSerializer.read(ShowItemSerializer.java:97) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.libs.kyori.adventure.text.serializer.gson.ShowItemSerializer.read(ShowItemSerializer.java:49) ~[ShowItem.jar:?]
	at com.google.gson.TypeAdapter$1.read(TypeAdapter.java:204) ~[gson-2.10.1.jar:?]
	at com.google.gson.Gson.fromJson(Gson.java:1227) ~[gson-2.10.1.jar:?]
	at com.google.gson.Gson.fromJson(Gson.java:1329) ~[gson-2.10.1.jar:?]
	at com.google.gson.Gson.fromJson(Gson.java:1271) ~[gson-2.10.1.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.libs.kyori.adventure.text.serializer.gson.StyleSerializer.read(StyleSerializer.java:180) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.libs.kyori.adventure.text.serializer.gson.StyleSerializer.read(StyleSerializer.java:62) ~[ShowItem.jar:?]
	at com.google.gson.TypeAdapter$1.read(TypeAdapter.java:204) ~[gson-2.10.1.jar:?]
	at com.google.gson.Gson.fromJson(Gson.java:1227) ~[gson-2.10.1.jar:?]
	at com.google.gson.Gson.fromJson(Gson.java:1329) ~[gson-2.10.1.jar:?]
	at com.google.gson.Gson.fromJson(Gson.java:1271) ~[gson-2.10.1.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.libs.kyori.adventure.text.serializer.gson.ComponentSerializerImpl.read(ComponentSerializerImpl.java:224) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.libs.kyori.adventure.text.serializer.gson.ComponentSerializerImpl.read(ComponentSerializerImpl.java:77) ~[ShowItem.jar:?]
	at com.google.gson.TypeAdapter$1.read(TypeAdapter.java:204) ~[gson-2.10.1.jar:?]
	at com.google.gson.Gson.fromJson(Gson.java:1227) ~[gson-2.10.1.jar:?]
	at com.google.gson.Gson.fromJson(Gson.java:1137) ~[gson-2.10.1.jar:?]
	at com.google.gson.Gson.fromJson(Gson.java:1047) ~[gson-2.10.1.jar:?]
	at com.google.gson.Gson.fromJson(Gson.java:982) ~[gson-2.10.1.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.libs.kyori.adventure.text.serializer.gson.GsonComponentSerializerImpl.deserialize(GsonComponentSerializerImpl.java:89) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.libs.kyori.adventure.text.serializer.gson.GsonComponentSerializerImpl.deserialize(GsonComponentSerializerImpl.java:41) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.ItemConverterImplementation.lambda$new$0(ItemConverterImplementation.java:127) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.ItemConverterImplementation.getHoverEvent(ItemConverterImplementation.java:229) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.ItemConverterImplementation.access$100(ItemConverterImplementation.java:56) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.ItemConverterImplementation$ComponentImplementation.<init>(ItemConverterImplementation.java:330) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.ItemConverterImplementation$ComponentImplementation.<init>(ItemConverterImplementation.java:310) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.ItemConverterImplementation.createComponent(ItemConverterImplementation.java:222) ~[ShowItem.jar:?]
	at ShowItem.jar/de.themoep.ShowItem.HelpMessenger.onClick(HelpMessenger.java:168) ~[ShowItem.jar:?]
	at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor176.execute(Unknown Source) ~[?:?]
	at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:77) ~[paper-mojangapi-1.21.1-R0.1-SNAPSHOT.jar:?]
	at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:84) ~[paper-mojangapi-1.21.1-R0.1-SNAPSHOT.jar:1.21.1-131-84281ce]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[paper-mojangapi-1.21.1-R0.1-SNAPSHOT.jar:?]
	at io.papermc.paper.plugin.manager.PaperEventManager.callEvent(PaperEventManager.java:54) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.callEvent(PaperPluginManagerImpl.java:131) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:628) ~[paper-mojangapi-1.21.1-R0.1-SNAPSHOT.jar:?]
	at net.minecraft.server.network.ServerGamePacketListenerImpl.handleContainerClick(ServerGamePacketListenerImpl.java:3224) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.network.protocol.game.ServerboundContainerClickPacket.handle(ServerboundContainerClickPacket.java:69) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.network.protocol.game.ServerboundContainerClickPacket.handle(ServerboundContainerClickPacket.java:33) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.network.protocol.PacketUtils.lambda$ensureRunningOnSameThread$0(PacketUtils.java:56) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.server.TickTask.run(TickTask.java:18) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:151) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1535) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:201) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:125) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1512) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1505) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:135) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.server.MinecraftServer.managedBlock(MinecraftServer.java:1464) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:1471) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1316) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:329) ~[paper-1.21.1.jar:1.21.1-131-84281ce]
	at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]

More context for this particular error: https://gitlab.com/Phoenix616/ShowItem/-/issues/21

In this plugin the json that is parsed via Adventure is obtained directly from NMS via Component.empty().withStyle((chatmodifier) -> chatmodifier.withHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_ITEM, new HoverEvent.ItemStackInfo(nmsItem)))) and serializing that to JSON (all classes are NMS classes) but I strongly suspect that the same issue occurs when using Paper's API implementation.