refactor(tools): update references of tools.utils to correct module

[chronolaw]

Summary

This is a follow up of #13156, clean some references of tools.utils.

KAG-3136

Checklist

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

Issue reference

Fix #[issue number]

[team-gateway-bot]

Cherry-pick failed for master, because it was unable to cherry-pick the commit(s).

Please cherry-pick the changes locally.

git remote add upstream https://github.com/kong/kong-ee
git fetch upstream master
git worktree add -d .worktree/cherry-pick-13162-to-master-to-upstream upstream/master
cd .worktree/cherry-pick-13162-to-master-to-upstream
git checkout -b cherry-pick-13162-to-master-to-upstream
ancref=$(git merge-base fb5d828d8c34c13f493a2fc70a02456402636ff7 0bed5ccace55cf11a0907f1856f586cdbb4ae73f)
git cherry-pick -x $ancref..0bed5ccace55cf11a0907f1856f586cdbb4ae73f