Actions: Bump actions/setup-python from 6 to 7 (#735)

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 6 to 7.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v6...v7)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/deploy.yml

@@ -24,7 +24,7 @@ jobs:
         steps:
           - uses: actions/configure-pages@v6
           - uses: actions/checkout@v7
-          - uses: actions/setup-python@v6
+          - uses: actions/setup-python@v7
             with:
               python-version: 3.x
           - run: pip install zensical