Deps: Bump the python-packages group with 3 updates

Bumps the python-packages group with 3 updates: [librt](https://github.com/mypyc/librt), [ruff](https://github.com/astral-sh/ruff) and [urllib3](https://github.com/urllib3/urllib3).


Updates `librt` from 0.6.3 to 0.7.3
- [Commits](mypyc/librt@v0.6.3...v0.7.3)

Updates `ruff` from 0.14.7 to 0.14.8
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.14.7...0.14.8)

Updates `urllib3` from 2.5.0 to 2.6.0
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.5.0...2.6.0)

---
updated-dependencies:
- dependency-name: librt
  dependency-version: 0.7.3
  dependency-type: indirect
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: ruff
  dependency-version: 0.14.8
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: urllib3
  dependency-version: 2.6.0
  dependency-type: indirect
  update-type: version-update:semver-minor
  dependency-group: python-packages
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]