Bump the python-packages group with 3 updates (#401)

Bumps the python-packages group with 3 updates: [parsl](https://github.com/Parsl/parsl), [botocore](https://github.com/boto/botocore) and [pillow](https://github.com/python-pillow/Pillow).


Updates `parsl` from 2025.12.15 to 2025.12.29
- [Commits](Parsl/parsl@2025.12.15...2025.12.29)

Updates `botocore` from 1.42.14 to 1.42.21
- [Commits](boto/botocore@1.42.14...1.42.21)

Updates `pillow` from 12.0.0 to 12.1.0
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@12.0.0...12.1.0)

---
updated-dependencies:
- dependency-name: parsl
  dependency-version: 2025.12.29
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: botocore
  dependency-version: 1.42.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: pillow
  dependency-version: 12.1.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: python-packages
...

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Author: dependabot[bot]