Apply trexfeathers/cf-units#8 `.pre-commit-config.yaml` improvements to `templates/.pre-commit-config.yaml`?

[trexfeathers]

trexfeathers/cf-units#8 (by @trexfeathers) includes changes to .pre-commit-config.yaml. This file is templated by templates/.pre-commit-config.yaml. Please either:

• Action this issue with a pull request applying the changes to templates/.pre-commit-config.yaml.
• Close this issue if the changes are not suitable for templating.