How to make a release

Following https://github.com/codespell-project/codespell/pull/2523:

1. Before creating a release, ensure all supported Python versions are listed in the following places:

   1. .github/workflows/codespell-private.yml
   2. pyproject.toml
      1. The minimum version under requires-python
      2. All supported versions are listed under classifiers

2. Create a published release on GitHub:

   1. Use the form v2.2.1 for the tag and the title
   2. Use autogenerated GitHub release notes

This should trigger .github/workflows/release.yml to push to PyPI, and then later conda-forge tickbot should automatically update as well.