# What this PR does
Add [`yamllint`](https://github.com/adrienverge/yamllint) to
`pre-commit` configuration + fix pre-existing errors
## Checklist
- [x] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] `CHANGELOG.md` updated (or `pr:no changelog` PR label added if not
required)
