docformatter hook can't run with pre-commit 4 due to PyCQA/docformatter#287

pre-commit action cannot specify pre-commit version.
pre-commit action is also readily replaced with a single run:

run: |
  pip install 'pre-commit<4'
  pre-commit run --all-files --show-diff-on-failure --color=always

(plus cache, if you want it)

Originally posted by @minrk in #3056 (comment)