Bump Google.Protobuf from 3.27.0 to 3.29.3

Bumps [Google.Protobuf](https://github.com/protocolbuffers/protobuf) from 3.27.0 to 3.29.3.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v3.27.0...v3.29.3)

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

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

Author: dependabot[bot]

src/WebSocketeer/WebSocketeer.csproj

@@ -10,7 +10,7 @@
 
   <ItemGroup>
     <PackageReference Include="NuGetizer" Version="1.2.4" PrivateAssets="all" />
-    <PackageReference Include="Google.Protobuf" Version="3.27.0" />
+    <PackageReference Include="Google.Protobuf" Version="3.29.3" />
     <PackageReference Include="Grpc.AspNetCore" Version="2.67.0" Pack="false" />
     <PackageReference Include="RxFree" Version="1.1.2" PrivateAssets="all" />
     <PackageReference Include="WebSocketChannel" Version="1.2.0" />