Deps: Bump the python-packages group with 4 updates

Bumps the python-packages group with 4 updates: [pontos](https://github.com/greenbone/pontos), [librt](https://github.com/mypyc/librt), [rich](https://github.com/Textualize/rich) and [ruff](https://github.com/astral-sh/ruff).


Updates `pontos` from 25.8.1 to 26.2.0
- [Release notes](https://github.com/greenbone/pontos/releases)
- [Commits](greenbone/pontos@v25.8.1...v26.2.0)

Updates `librt` from 0.8.0 to 0.8.1
- [Commits](mypyc/librt@v0.8.0...v0.8.1)

Updates `rich` from 14.3.2 to 14.3.3
- [Release notes](https://github.com/Textualize/rich/releases)
- [Changelog](https://github.com/Textualize/rich/blob/master/CHANGELOG.md)
- [Commits](Textualize/rich@v14.3.2...v14.3.3)

Updates `ruff` from 0.15.1 to 0.15.2
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.15.1...0.15.2)

---
updated-dependencies:
- dependency-name: pontos
  dependency-version: 26.2.0
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: python-packages
- dependency-name: librt
  dependency-version: 0.8.1
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: rich
  dependency-version: 14.3.3
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: ruff
  dependency-version: 0.15.2
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: python-packages
...

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Author: dependabot[bot]