chore(deps): update dependency google.protobuf to v3.22.1 (#51)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/OpenFeature.Contrib.Providers.Flagd/OpenFeature.Contrib.Providers.Flagd.csproj

@@ -25,7 +25,7 @@
     <!-- The schema.proto file referenced here will be used to automatically generate the Grpc client when executing 'dotnet build' -->
     <!-- The generated files will be placed in ./obj/Debug/netstandard2.0/Protos -->
     <Protobuf Include="schemas\protobuf\schema\v1\schema.proto" GrpcServices="Client" />
-    <PackageReference Include="Google.Protobuf" Version="3.21.12" />
+    <PackageReference Include="Google.Protobuf" Version="3.22.1" />
     <PackageReference Include="Grpc.Net.Client" Version="2.51.0" />
     <PackageReference Include="Grpc.Tools" Version="2.51.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>