build(deps-dev): bump ruff from 0.15.0 to 0.15.12 (#726)

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.15.0 to 0.15.12.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.15.0...0.15.12)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.15.12
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements-dev.txt

@@ -1,4 +1,4 @@
 holidays>=0.58
 num2words==0.5.13
 coverage>=7.2.7
-ruff==0.15.0
+ruff==0.15.12