<!-- Release notes generated using configuration in .github/release.yml at main -->
Adding 3.13 classifier.
What's Changed
* chore: use Ruff-format, modernize by henryiii in https://github.com/henryiii/flake8-errmsg/pull/28
* ci: group dependabot updates by henryiii in https://github.com/henryiii/flake8-errmsg/pull/35
* chore: faster CI, 3.13 classifier by henryiii in https://github.com/henryiii/flake8-errmsg/pull/43
**Full Changelog**: https://github.com/henryiii/flake8-errmsg/compare/v0.5.0...v0.5.1