chore(deps): update dependency com_github_grpc_grpc to v1.39.0

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
com_github_grpc_grpc	http_archive	minor	v1.38.1 -> v1.39.0

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Release Notes

grpc/grpc

v1.39.0

Compare Source

This is release 1.39.0 (goofy) of gRPC Core.

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

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

Core

• Initialize tcp_posix for CFStream when needed. (#​26530)
• Update boringssl submodule. (#​26520)
• Fix backup poller races. (#​26446)
• I am back. (#​26464)
• Use default port 443 in HTTP CONNECT request. (#​26331)

C++

• New iomgr implementation backed by the EventEngine API. (#​26026)
• async_unary_call: add a Destroy method, called by std::default_delete. (#​26389)
• De-experimentalize C++ callback API. (#​25728)

C#

• [C#] Add ChannelCredentials.SecureSsl property for better codecompletion with ChannelCredentials. (#​26472)
• Better way of building protoc aarch64 artifacts. (#​26416)
• Add C# plugin "file_suffix" option defaulting to "Grpc.cs". (#​26162)
• Add "GeneratedCode" attribute to generated service stubs. (#​26164)

PHP

• PHP: stop reading composer.json file just to read the version string. (#​26156)

Python

• Python AIO: Match continuation typing on Interceptors. (#​26500)
• Workaround #​26279 by publishing manylinux_2_24 wheels instead of manylinux2014 on aarch64. (#​26430)
• Fix zlib unistd.h import problem. (#​26374)
• Handle gevent exception in gevent poller. (#​26058)

Ruby

• Set XDS user agent in ruby via macros. (#​26268)

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This change is 

[coryan]

/gcbrun

[google-cloud-cpp-bot]

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For commit: b21a08705315cdbbd4f5412895e98db2123f58fd

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[codecov]

Codecov Report

Merging #7039 (b21a087) into main (30907bc) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #7039   +/-   ##
=======================================
  Coverage   94.47%   94.47%           
=======================================
  Files        1304     1304           
  Lines      112300   112300           
=======================================
+ Hits       106099   106100    +1     
+ Misses       6201     6200    -1     

Impacted Files	Coverage Δ
...sub/internal/batching_publisher_connection_test.cc	97.60% <0.00%> (-0.21%)	⬇️
google/cloud/grpc_error_delegate.cc	100.00% <0.00%> (+4.16%)	⬆️

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