Log Message:
grpc: updated to 1.35.0

Release 1.35.0

For gRPC documentation, see grpc.io. For previous releases, see Releases.

This release contains refinements, improvements, and bug fixes, with highlights \ 
listed below.

Core

Backport "Fix implicit declaration error in zlib + macOS".
xDS features doc update for case insensitive prefix/full path matching.
Add darwin_arm64 and darwin_arm64e to c-ares config settings.
Add FileWatcher CertificateProvider.
Protect xds security code with the environment variable \ 
"GRPC_XDS_EXPERIMENTAL_SECURITY_SUPPORT".

C++

Upgrade bazel to 3.7.1 (repository-wide).
Makefile: remove support for building protobuf, C++ libraries and executables.

C#

fix nuget package signing on Linux (do not use PublicSign=true on non-windows).
Remove C# as a supported language for xDS features.
Fix C# native library loading in .NET 5 single-file apps.

Python

Fix visibility of libprotobuf symbols in protoc_compiler.so on Mac.
[Aio] Correct type annotation of grpc.aio.ServicerContext.abort.
Add limit concurrent RPC feature to asyncio server.
[Aio] Fix the emtpy response handling in streaming RPC.
[Backport] Implement grpc.Future interface in SingleThreadedRendezvous.
[Backport] Make Python 2 an optional dependency for Bazel build.

Ruby

Fix implicit decalaration in rb_event_thread.c.
Base the ruby build off of latest rake-compiler-dock/manylinux14 images, add \ 
ruby 3.0 binary packages.
Ruby: add support to circuit_breaking xds interop test case.
Binary packages (for example, grpc-1.35.0-x86_64-linux.gem):
Are now compatible with ruby 3.0
Are now built off of manylinux14 (we no longer support Centos 6)