Bump Microsoft.Orleans.Core from 3.6.5 to 7.1.0

Bumps [Microsoft.Orleans.Core](https://github.com/dotnet/orleans) from 3.6.5 to 7.1.0.
- [Release notes](https://github.com/dotnet/orleans/releases)
- [Commits](dotnet/orleans@v3.6.5...v7.1.0)

---
updated-dependencies:
- dependency-name: Microsoft.Orleans.Core
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Source/Sample/Sample.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="6.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="6.0.0" />
 
-    <PackageReference Include="Microsoft.Orleans.Core" Version="3.6.5" />
+    <PackageReference Include="Microsoft.Orleans.Core" Version="7.1.0" />
     <PackageReference Include="Microsoft.Orleans.Server" Version="3.6.5" />
     <PackageReference Include="Microsoft.Orleans.OrleansRuntime" Version="3.6.5" />
     <PackageReference Include="Microsoft.Orleans.CodeGenerator.MSBuild" Version="3.6.5">