Restores previous versions of gRPC and protobuf to preserve backward …

…compatibility with earlier versions of Helidon.

Signed-off-by: Santiago Pericas-Geertsen <[email protected]>

dependencies/pom.xml

@@ -53,12 +53,12 @@
         <version.lib.google-api-client>1.34.1</version.lib.google-api-client>
         <version.lib.google-oauth-client>1.33.3</version.lib.google-oauth-client>
         <version.lib.google-error-prone>2.3.3</version.lib.google-error-prone>
-        <version.lib.google-protobuf>4.27.3</version.lib.google-protobuf>
+        <version.lib.google-protobuf>3.21.7</version.lib.google-protobuf>
         <version.lib.graalvm>23.1.0</version.lib.graalvm>
         <version.lib.graphql-java>22.1</version.lib.graphql-java>
         <version.lib.graphql-java.extended.scalars>22.0</version.lib.graphql-java.extended.scalars>
         <version.lib.gson>2.9.0</version.lib.gson>
-        <version.lib.grpc>1.65.1</version.lib.grpc>
+        <version.lib.grpc>1.60.0</version.lib.grpc>
         <version.lib.guava>32.0.1-jre</version.lib.guava>
         <version.lib.h2>2.2.220</version.lib.h2>
         <version.lib.hamcrest>1.3</version.lib.hamcrest>