build: 🔖 update version to 0.23.1 [skip ci]

Author: github-actions[bot]

CHANGELOG.md

@@ -22,6 +22,15 @@ within each release.
 Commits from bots, like `dependabot` or `pre-commit-ci`, are not
 included in the changelog.
 
+## [0.23.1](https://github.com/seedcase-project/template-python-package/compare/0.23.0..0.23.1) - 2026-05-22
+
+### ♻️ Refactor
+
+- Move config files into `.config/` or `pyproject.toml`
+  [#280](https://github.com/seedcase-project/template-python-package/pull/280)
+  by [`@lwjohnst86`](https://github.com/lwjohnst86)
+  ([f65c2bc](https://github.com/seedcase-project/template-python-package/commit/f65c2bc7fad7654ed5261bd9e5d0614121905e17))
+
 ## [0.23.0](https://github.com/seedcase-project/template-python-package/compare/0.22.3..0.23.0) - 2026-05-22
 
 ### ✨ Features