gRPC C++ patch releases to fix Cord optimization memory bug

[veb...@google.com]

Hi,

To fix a memory bug in gRPC C++ that occurs when deserializing absl::Cord data, gRPC C++ has released a few patch versions, 1.55.x through 1.59.x. If you are using gRPC C++ and absl::Cord, please upgrade it to one of these patch versions. 

- https://github.com/grpc/grpc/releases/tag/v1.55.4

- https://github.com/grpc/grpc/releases/tag/v1.56.3

- https://github.com/grpc/grpc/releases/tag/v1.57.1

- https://github.com/grpc/grpc/releases/tag/v1.58.2

- https://github.com/grpc/grpc/releases/tag/v1.59.1

This issue only affects gRPC C++; other languages are not affected.

Regards,

Esun.