chore(deps): update dependency google.protobuf to 3.28.2 (#272)

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

@@ -27,7 +27,7 @@
     <PackageReference Include="Semver" Version="2.3.0" />
     <Protobuf Include="schemas\protobuf\flagd\evaluation\v1\evaluation.proto" GrpcServices="Client" />
     <Protobuf Include="schemas\protobuf\flagd\sync\v1\sync.proto" GrpcServices="Client" />
-    <PackageReference Include="Google.Protobuf" Version="3.27.3" />
+    <PackageReference Include="Google.Protobuf" Version="3.28.2" />
     <PackageReference Include="Grpc.Net.Client" Version="2.65.0" />
     <PackageReference Include="Grpc.Tools" Version="2.66.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>