Bump to xamarin/Java.Interop/main@5318261 (#7502)

Fixes: dotnet/java-interop#1034
Fixes: dotnet/java-interop#1051

Context: 938b2cb

Changes: dotnet/java-interop@e1ee4b1...5318261

  * dotnet/java-interop@53182615: [build] Update Microsoft.* NuGet package versions (dotnet/java-interop#1055)
  * dotnet/java-interop@8e18c909: [generator] Avoid C#11 delegate cache overhead. (dotnet/java-interop#1053)
  * dotnet/java-interop@2d8b6d24: [generator] More AttributeTargets on SupportedOSPlatformAttribute (dotnet/java-interop#1054)
  * dotnet/java-interop@7dfbab67: [generator] Add [SupportedOSPlatform] to bound constant fields (dotnet/java-interop#1038)
  * dotnet/java-interop@1720628a: [generator] Mark generated .cs files as generated (dotnet/java-interop#1052)
  * dotnet/java-interop@f498fcf5: [Java.Interop] Avoid some method group conversions (dotnet/java-interop#1050)
  * dotnet/java-interop@16e1ecd4: [build] Use $(VSINSTALLDIR), not $(VSINSTALLROOT) (dotnet/java-interop#1048)
  * dotnet/java-interop@8e4c7d20: [Hello-Core] Add "low level" sample. (dotnet/java-interop#1047)

Additionally, remove `$(LangVersion)`=10 from `Mono.Android.csproj`,
which was a hack to work around a size regression due to delegate
caching in C# 11; see also 938b2cb, dotnet/java-interop@8e18c909.

Co-authored-by: Jonathan Pobst <jonathan.pobst@microsoft.com>

src/Mono.Android/Mono.Android.csproj

@@ -22,8 +22,6 @@
     <Nullable>enable</Nullable>
     <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
     <EnableSingleFileAnalyzer>true</EnableSingleFileAnalyzer>
-    <!-- Avoids the size increase for C# delegates -->
-    <LangVersion>10</LangVersion>
   </PropertyGroup>
 
   <PropertyGroup Condition=" '$(TargetFramework)' == 'monoandroid10' ">