Update dependency protobuf to v35.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
protobuf	bazel_dep	minor	35.0 → 35.1

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Release Notes

protocolbuffers/protobuf (protobuf)

v35.1: 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) (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. (1f99c52)

C++

• Add cord setters to repeated string fields. (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. (c35b977)

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