Bump ruff from 0.12.0 to 0.12.1 (#156)

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.12.0 to 0.12.1.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.12.0...0.12.1)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.12.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -33,7 +33,7 @@ prometheus-xmpp-alerts = "prometheus_xmpp.__main__:main"
 
 [project.optional-dependencies]
 testing = ["pytz"]
-dev = ["ruff==0.12.0"]
+dev = ["ruff==0.12.1"]
 
 [tool.setuptools]
 packages = ["prometheus_xmpp"]