chore(deps): update dependency grpc.tools to v2.57.0 (#77)

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 @@
     <Protobuf Include="schemas\protobuf\schema\v1\schema.proto" GrpcServices="Client" />
     <PackageReference Include="Google.Protobuf" Version="3.23.4" />
     <PackageReference Include="Grpc.Net.Client" Version="2.55.0" />
-    <PackageReference Include="Grpc.Tools" Version="2.56.2">
+    <PackageReference Include="Grpc.Tools" Version="2.57.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>