Bump grpc from 1.78.0 to 1.80.0-pre1

[dependabot]

Bumps grpc from 1.78.0 to 1.80.0-pre1.

Release notes

Sourced from grpc's releases.

Release v1.80.0-pre1

This is a prerelease of gRPC Core 1.80.0 (glimmering).

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

This prerelease contains refinements, improvements, and bug fixes.

Release v1.78.1

This is release 1.78.1 (gutsy) 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.

Python

Added 2026-03-12:
CAUTION! This gRPC Python release 1.78.1 was yanked from PyPI on 2026-02-26 due to issue #41725.

• [REVERTED] Remove unintentional log WARNING: All log messages before absl::InitializeLog() is called are written to STDERR. (#41639)
• [REVERTED] Fix inconsistent GRPC_ENABLE_FORK_SUPPORT runtime defaults between gRPC Core and Python. (#41588).
  • This fixed #37710, a request processing hang in certain multithreaded environments: Other threads are currently calling into gRPC, skipping fork() handlers.
• Modernize the API Docs site: https://grpc.github.io/grpc/python. (#41494)

Ruby

• Build/test ruby 4.0 and build native gems with Ruby 4.0 support. (#41554)

Commits

• be4c1c5 [subchannel] fix crash in connection scaling code (#41853)
• a71df73 [Release] Bump version to 1.80.0-pre1 (on v1.80.x branch) (#41844)
• 3ca09e4 [Python] Fix GRPC_TRACE and add test to check the GRPC_TRACE logs print (#41814)
• 260c6fd [PHP] Disable php infinite recursion check for callback from Core to PHP (#41...
• 50957c5 [Flakiness] Delete flaky iomgr fd_conservation_posix_test and create an Event...
• e1e1d0a [Bzlmod] Turn off bzlmod for PSM python tests. (#41810)
• 5a3a5d5 [ssl] Implement TLS private key signer in Python. (#41701)
• c253a38 [bzlmod] Support bzlmod in upb api generation script. (#41801)
• 3176aed [test] Regenerate SPIFFE test certificates (#41827)
• 95fd17b [Fix][CI] Increase Clang Tidy PR Kokoro job timeout from 60 to 90 (#41819)
• Additional commits viewable in compare view

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.04%. Comparing base (4307862) to head (a6f600b).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3938      +/-   ##
==========================================
- Coverage   90.06%   90.04%   -0.01%     
==========================================
  Files         226      226              
  Lines        7227     7227              
==========================================
- Hits         6508     6507       -1     
- Misses        719      720       +1     

see 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[marcalff]

Do not merge: we don't want 1.80.0-pre1, waiting for 1.80.0