chore(deps): update protobuf to v29.4

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
com_google_protobuf	http_archive	minor	v29.3 -> v29.4
protobuf	bazel_dep	minor	29.3 -> 29.4
protocolbuffers/protobuf		minor	v29.3 -> v29.4

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Release Notes

protocolbuffers/protobuf (com_google_protobuf)

v29.4: Protocol Buffers v29.4

Compare Source

Announcements

• Protobuf News may include additional announcements or pre-announcements for upcoming changes.

Java

• Fix Java concurrency issue in feature resolution for old <=3.25.x gencode using lazy feature resolution. (#​20750) (protocolbuffers/protobuf@ce59907)

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This change is 

[dpebot]

/gcbrun

[scotthart]

/gcbrun

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.90%. Comparing base (15fe3a1) to head (0ebd984).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #15050      +/-   ##
==========================================
- Coverage   92.90%   92.90%   -0.01%     
==========================================
  Files        2351     2351              
  Lines      210211   210211              
==========================================
- Hits       195304   195294      -10     
- Misses      14907    14917      +10     

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