Bump the actions-deps group with 2 updates

Bumps the actions-deps group with 2 updates: [actions/setup-python](https://github.com/actions/setup-python) and [psf/black](https://github.com/psf/black).


Updates `actions/setup-python` from 3 to 6
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v3...v6)

Updates `psf/black` from 24.4.2 to 25.12.0
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@24.4.2...25.12.0)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions-deps
- dependency-name: psf/black
  dependency-version: 25.12.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions-deps
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/python-app.yml

@@ -33,16 +33,16 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: actions/setup-python@v3
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ env.DEFAULT_PYTHON }}
-      - uses: psf/black@24.4.2
+      - uses: psf/black@25.12.0
 
   pylint:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ env.DEFAULT_PYTHON }}
       - name: Install uv