templates/python-bump: also bump hardcoded versions in workflow

Signed-off-by: Benjamin Gilbert <[email protected]>

Author: bgilbert

.github/ISSUE_TEMPLATE/python-bump.md

@@ -3,7 +3,7 @@
 - Update Git main
   - [ ] `git checkout main`
   - [ ] In `pyproject.toml`, add classifier for new Python version and update `tool.black.target-version`
-  - [ ] Add new Python version to lists in `.github/workflows/python.yml`
+  - [ ] In `.github/workflows/python.yml`, update hardcoded Python versions and add new version to lists
   - [ ] Commit and open a PR
   - [ ] Merge the PR when CI passes
   - [ ] Add new Python jobs to [branch protection required checks](https://github.com/openslide/openslide-python/settings/branches)