Upgrade API dependencies

[adriansmares]

Summary

This PR upgrades the dependencies used to generate our API (specifically pkg/ttnpb).

Changes

• Upgrade protoc-gen-go to v1.32.0.
• Upgrade protoc-gen-go-grpc to v1.60.1 (the generator is actually unchanged and still version v1.3.0).
• Upgrade protoc-gen-grpc-gateway to v2.19.0.
  • This is the only change which actually changes the generated code - no behavioral changes are expected.
• Upgrade sqlfmt to v0.21.0.
• Bump the version of our own proto generators, but they are noop changes as we just published a new version in order to publish them to Buf.

Testing

Unit testing. No manual testing is required.

Regressions

If the dependencies have any behavioral changes, we could see transitive regressions. I've checked the changelog of the updated dependencies and did not see anything special.

Notes for Reviewers

No reviews required - CI only.

Checklist

• Scope: The referenced issue is addressed, there are no unrelated changes.
• Compatibility: The changes are backwards compatible with existing API, storage, configuration and CLI, according to the compatibility commitments in README.md for the chosen target branch.
• Documentation: Relevant documentation is added or updated.
• The steps/process to test this feature are clearly explained including testing for regressions.
• Changelog: Significant features, behavior changes, deprecations and fixes are added to CHANGELOG.md.
• Commits: Commit messages follow guidelines in CONTRIBUTING.md, there are no fixup commits left.