rebase: bump google.golang.org/grpc from 1.69.4 to 1.70.0

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.69.4 to 1.70.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.69.4...v1.70.0)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

vendor/google.golang.org/grpc/server.go

@@ -1360,8 +1360,16 @@ func (s *Server) processUnaryRPC(ctx context.Context, stream *transport.ServerSt
 		}
 		return err
 	}
-	defer d.Free()
+	freed := false
+	dataFree := func() {
+		if !freed {
+			d.Free()
+			freed = true
+		}
+	}
+	defer dataFree()
 	df := func(v any) error {
+		defer dataFree()
 		if err := s.getCodec(stream.ContentSubtype()).Unmarshal(d, v); err != nil {
 			return status.Errorf(codes.Internal, "grpc: error unmarshalling request: %v", err)
 		}