chore(CI): replace `bazelbuild/setup-bazelisk` with `bazel-contrib/setup-bazel`

[ADD-SP]

Summary

We should consider migrating to bazel-contrib/setup-bazel since bazelbuild/setup-bazelisk has been archived.

Checklist

• [N/A] The Pull Request has tests
• [N/A] A changelog file has been created under changelog/unreleased/kong or skip-changelog label added on PR if changelog is unnecessary. README.md
• [N/A] There is a user-facing docs PR against https://github.com/Kong/docs.konghq.com - PUT DOCS PR HERE

Issue reference

KAG-4450