Bump the pip-dependencies group with 3 updates

Bumps the pip-dependencies group with 3 updates: [coverage](https://github.com/nedbat/coveragepy), [ruff](https://github.com/astral-sh/ruff) and [mypy](https://github.com/python/mypy).


Updates `coverage` from 7.6.10 to 7.6.12
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.6.10...7.6.12)

Updates `ruff` from 0.9.4 to 0.9.9
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.9.4...0.9.9)

Updates `mypy` from 1.14.1 to 1.15.0
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.14.1...v1.15.0)

---
updated-dependencies:
- dependency-name: coverage
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: pip-dependencies
- dependency-name: ruff
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: pip-dependencies
- dependency-name: mypy
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: pip-dependencies
...

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Author: dependabot[bot]