chore: fix commitlint

[ehmicky]

This fixes the pre-commit Git hook, using the same commitlint.config.js as our other repositories like netlify-plugin-nextjs.

Checklist

Please add a x inside each checkbox:

• I have read the contribution guidelines.
• I have added tests (we are enforcing 100% test coverage).
• I have added documentation in the README.md, the docs directory (if
  any) and the examples directory (if any).
• The status checks are successful (continuous integration). Those can be
  seen below.