Bump Google.Protobuf from 3.29.1 to 3.29.2 in /hello-grpc-csharp

Bumps [Google.Protobuf](https://github.com/protocolbuffers/protobuf) from 3.29.1 to 3.29.2.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v3.29.1...v3.29.2)

---
updated-dependencies:
- dependency-name: Google.Protobuf
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Diff for: hello-grpc-csharp/Common/Common.csproj

@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <!-- https://www.nuget.org/packages/Google.Protobuf -->
-    <PackageReference Include="Google.Protobuf" Version="3.29.1" />
+    <PackageReference Include="Google.Protobuf" Version="3.29.2" />
     <!-- https://www.nuget.org/packages/Grpc -->
     <PackageReference Include="Grpc" Version="2.46.6" />
     <!-- https://www.nuget.org/packages/Grpc.Tools -->