chore(ci): Bump bufbuild/buf-setup-action from 1.39.0 to 1.40.0 (#21215)

Bumps [bufbuild/buf-setup-action](https://github.com/bufbuild/buf-setup-action) from 1.39.0 to 1.40.0.
- [Release notes](https://github.com/bufbuild/buf-setup-action/releases)
- [Commits](https://github.com/bufbuild/buf-setup-action/compare/v1.39.0...v1.40.0)

---
updated-dependencies:
- dependency-name: bufbuild/buf-setup-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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