Log Message:
grpc py-grpcio py-grpcio-testing py-grpcio-tools: updated to 1.41.0

Release v1.41.0

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

Core

De-experimentalize XdsCredentials and XdsServerCredentials API.
xDS: Remove environmental variable guard for security.
xDS Security: Use new way to fetch certificate provider plugin instance config.
xDS server serving status: Use a struct to allow more fields to be added in the \ 
future.
Annotate impl/codegen with IWYU pragmas.
Update submodule envoy-api to origin/main.
Upgrade third_party/protobuf to v3.17.3.
update submodule boringssl-with-bazel with origin/master-with-bazel.
Delete libuv-iomgr implementation and GRPC_UV build option.
Allow access to Google API regional endpoints via Google Default Credentials.
Remove GPR_*_TLS macros except PTHREAD.
Limit initial window size increases and per-stream window delta.

C++

Bump version to v1.41.0-pre1.
De-experimentalize XdsServerBuilder.
C++ opencensus filter: Fix point of creating context for overall call.
Flag grpc++_test library testonly.
Add note on officially supported platforms.
Open census call attempt span name and attribute changes
Open census call attempt span name and attribute changes.

C#

Backport 27382 to v1.41.x.
[csharp] Fix error loading library grpc_csharp_ext.*.dll on windows with \ 
non-ASCII encoding.
Annotate copied Content native lib items with package id to enable customization.

Objective-C

Objective-C: Fix issue with creating a Unix file socket.

Python

Use manylinux_2_17 instead of manylinux_2_24 tag for manylinux2014 aarch64 wheels.
Add Python 3.10 drop 3.5.
[Aio] Remove custom IO manager support.