build: re-enable NU1605

- re-enable NU1605 warning;
- fix package versions so there are no package downgrades which
caused NU1605 errors.

Directory.Build.props

@@ -6,6 +6,5 @@
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
     <DebugType>embedded</DebugType>
-    <WarningsNotAsErrors>$(WarningsNotAsErrors);NU1605</WarningsNotAsErrors>
   </PropertyGroup>
 </Project>

Directory.Build.targets

@@ -6,7 +6,7 @@
         <PackageReference Update="FSharp.Core"
                           Condition="'$(MSBuildProjectExtension)' == '.fsproj' And '$(DisableImplicitFSharpCoreReference)' != 'true' And '$(UpdateImplicitFSharpCoreReference)' != 'false'"
                           IsImplicitlyDefined="true"
-                          Version="6.0.0" />
+                          Version="[6.0.7]" />
     </ItemGroup>
     <!-- Download and copy packages used by Fornax as these are no longer managed using Paket -->
     <ItemGroup>

Directory.Packages.props

@@ -18,12 +18,12 @@
     <PackageVersion Include="Ionide.ProjInfo.FCS" Version="0.58" />
     <PackageVersion Include="Ionide.ProjInfo.Sln" Version="0.58" />
     <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="5.0" />
-    <PackageVersion Include="Microsoft.Build" Version="16.11" />
-    <PackageVersion Include="Microsoft.Build.Framework" Version="16.11.0" />
+    <PackageVersion Include="Microsoft.Build" Version="17.2.0" />
+    <PackageVersion Include="Microsoft.Build.Framework" Version="17.2.0" />
     <PackageVersion Include="Microsoft.Build.Locator" Version="1.4.1" />
     <PackageVersion Include="Microsoft.Build.Tasks.Core" Version="17.2.0" />
     <PackageVersion Include="Microsoft.Build.Tasks.Git" Version="1.0" />
-    <PackageVersion Include="Microsoft.Build.Utilities.Core" Version="16.11.0" />
+    <PackageVersion Include="Microsoft.Build.Utilities.Core" Version="17.2.0" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.2" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Common" Version="3.10" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="3.10" />