Create a hook for synchronising pre-commit config and requirements files

[mzaja]

pre-commit autoupdate automatically updates the dependencies in .pre-commit-config.yaml. However, this breaks the link with dependencies specified in requirements.txt or similar.

Develop a hook which will, on detecting that pre-commit config has changed, automatically update any such hook version in requirements files.

After this, repository name change will be due to something more generic like pre-commit-hooks.