Use pre-commit-update in pre-commit dependency update workflow

[Copilot]

This updates the pre-commit dependency refresh workflow to avoid selecting non-release hook revisions. The workflow now uses pre-commit-update instead of pre-commit autoupdate, matching the intended update policy.

• Workflow command change

  • Replaced the update command in .github/workflows/pre_commit_update_workflow.yml:
    • pre-commit autoupdate → pre-commit-update
  • Added a short inline note documenting why the command differs.

• Tooling install update

  • Updated the install step to include both tools required by the workflow:
    • pip install pre-commit pre-commit-update

Example of the effective workflow change:

- name: Install pre-commit and pre-commit-update
  run: pip install pre-commit pre-commit-update

# pre-commit-update doesn't try to include non-release versions
pre-commit-update

Fixes #291