chore(deps): bump Grpc.Net.Client from 2.55.0 to 2.56.0

Bumps [Grpc.Net.Client](https://github.com/grpc/grpc-dotnet) from 2.55.0 to 2.56.0.
- [Release notes](https://github.com/grpc/grpc-dotnet/releases)
- [Changelog](https://github.com/grpc/grpc-dotnet/blob/master/doc/release_process.md)
- [Commits](grpc/grpc-dotnet@v2.55.0...v2.56.0)

---
updated-dependencies:
- dependency-name: Grpc.Net.Client
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

src/Pinecone.csproj

@@ -42,7 +42,7 @@
     </PackageReference>
     <PackageReference Include="RangeExtensions" Version="2.1.1" />
     <PackageReference Include="Google.Protobuf" Version="3.24.1" />
-    <PackageReference Include="Grpc.Net.Client" Version="2.55.0" />
+    <PackageReference Include="Grpc.Net.Client" Version="2.56.0" />
     <PackageReference Include="Grpc.Net.ClientFactory" Version="2.56.0" />
     <PackageReference Include="Grpc.Tools" Version="2.57.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>