Consider new release of protobuf.

[slott56]

This is an old release of protobuf (32.1.0.1.20250512201741+dffb8c8cf781). It's flagged by a dependabot alert, and it's not perfectly clear why this hasn't been upgraded recently.

cel-python/pyproject.toml

Line 60 in f9aa7cb

"google-cel-spec-protocolbuffers-pyi==32.1.0.1.20250512201741+dffb8c8cf781",

See https://github.com/protocolbuffers/protobuf for the current release, 33.5, which may pass all tests and not have an outstanding CVE