chore: bump actions/setup-python from 5.5.0 to 5.6.0

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 5.5.0 to 5.6.0.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@8d9ed9a...a26af69)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-version: 5.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/repository-validation.yml

@@ -77,7 +77,7 @@ jobs:
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # V4.2.2
 
       - name: Set up Python ${{ needs.get-python-version.outputs.version }}
-        uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55  # V5.5.0
+        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065  # V5.6.0
         with:
           python-version: ${{ needs.get-python-version.outputs.version }}