Bump protobuf from 32.0 to 35.1

[dependabot]

Bumps protobuf from 32.0 to 35.1.

Release notes

Sourced from protobuf's releases.

Protocol Buffers v35.1

Announcements

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

Bazel

• Bazel 9 tests for csharp, hpb, objc, php, python, rust and upb (#27598) (protocolbuffers/protobuf@4469e38)
• Break protobuf dependency on Bazel's proto fragment. Only respect the Starlark versions of --proto_toolchain_for*. This is a breaking change from 35.0, but matches the behavior in 34.x. (protocolbuffers/protobuf@1f99c52)

C++

• Add cord setters to repeated string fields. (protocolbuffers/protobuf@6efa174)

UPB (Python/PHP/Ruby C-Extension)

• Avoid UB in upb by switching to the XCT section, which will run our constructors before the compiler-generated initializers. (protocolbuffers/protobuf@c35b977)

Protocol Buffers v35.0

Announcements

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

Bazel

• Bazel 9 Support: Upgrade tests to Bazel 9 (protocolbuffers/protobuf@3ee8d8a)
• Moved protocopt flag out of the cc dir, since it is not a c++-specific flag. (protocolbuffers/protobuf@325d8dc)
• Add support for bazel 9.x (#26201) (protocolbuffers/protobuf@f08d703)
• Change @protobuf//bazel/flags:prefer_prebuilt_proto flag to True. (protocolbuffers/protobuf@f9f32d2)
• Dropped support for Bazel 7. (protocolbuffers/protobuf@1816758)

Compiler

• Implement the Edition 2026 naming style enforcement feature. This will help prevent field name collisions. (protocolbuffers/protobuf@ae0d964)
• Add enum to enforce_naming_style feature to avoid field naming collisions which will be implemented in Edition 2026. (protocolbuffers/protobuf@e4911a1)
• Fail writing files in protoc CLI if any file output path is relative. (protocolbuffers/protobuf@3bf2b07)
• Mangle types named XyzView if there is any direct sibling named Xyz (protocolbuffers/protobuf@63d6ef0)
• Improve the namespacing selected by rustc used for gencode types in errors. (protocolbuffers/protobuf@ce2eb73)
• Fully qualify scalar types in Kotlin/Native proto generator. (protocolbuffers/protobuf@adc8d22)
• Change _opt() accessors to return an std::Option instead of protobuf::Optional (protocolbuffers/protobuf@6ced612)
• Make Message's trait bounds much better for generic use (protocolbuffers/protobuf@be1292f)
• Support more chars in type URLs in the C++ text-format parser. (protocolbuffers/protobuf@3a87c6c)
• Validate Feature Support on Custom Options (protocolbuffers/protobuf@34c1110)
• Trait clarity effort: introduce Singular trait, for types which are allowed as simple fields (protocolbuffers/protobuf@cdbfaf1)
• Trait clarity improvement on Map traits (protocolbuffers/protobuf@a8daa95)

C++

• Workaround for attribute handling bug in gcc < 13 (protocolbuffers/protobuf@78dc67e)
• Implement the Edition 2026 naming style enforcement feature. This will help prevent field name collisions. (protocolbuffers/protobuf@ae0d964)
• Add enum to enforce_naming_style feature to avoid field naming collisions which will be implemented in Edition 2026. (protocolbuffers/protobuf@e4911a1)
• Enhance ParseInfoTree to provide location of names and values. (protocolbuffers/protobuf@1cb4fdb)
• Add integer overflow check to RepeatedPtrField::MergeFrom. (protocolbuffers/protobuf@cb5fe97)
• Adding sanity check for ListFields reflection call (protocolbuffers/protobuf@555360e)
• Introduce Arena::UniquePtr and Arena::Ptr as smart pointers to better manage (protocolbuffers/protobuf@bb00218)
• Bug fix for edition 2024 visibility checking. Visibility checking was not properly applied to service method input and output types. This is now applied properly and will error if method input/output types do not have visibility to those messages. (protocolbuffers/protobuf@5a56dee)
• Fixed data race in Python Free Threading by removing unnecessary SetHasBitForRepeated() call. (protocolbuffers/protobuf@8c1a9a4)

... (truncated)

Commits

• 35cd01f Updating version.json and repo version numbers to: 35.1
• 1a9b3ca Merge pull request #27920 from protocolbuffers/cord-setters-35
• 6efa174 Add cord setters to repeated string fields.
• 0074a3e Merge pull request #27916 from protocolbuffers/cherry-pick-starlark-flags
• 1f99c52 Break protobuf dependency on Bazel's proto fragment. Only respect the Starlar...
• 9570bfb Avoid UB in upb by switching to the XCT section, which will run our c… (#27609)
• e305237 Regenerate stale files
• c35b977 Avoid UB in upb by switching to the XCT section, which will run our construct...
• 4469e38 bazel 9 tests for csharp, hpb, objc, php, python, rust and upb (#27598)
• c1cce2f Merge pull request #27486 from protocolbuffers/35.x-202605192213
• Additional commits viewable in compare view

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.83%. Comparing base (de26178) to head (79c4e41).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4151   +/-   ##
=======================================
  Coverage   82.83%   82.83%           
=======================================
  Files         406      406           
  Lines       16913    16913           
=======================================
  Hits        14009    14009           
  Misses       2904     2904           

🚀 New features to boost your workflow:

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