Bump actions/setup-python from 4 to 5

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 4 to 5.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v4...v5)

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

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

.github/workflows/pages.yml

@@ -50,7 +50,7 @@ jobs:
         uses: actions/configure-pages@v4
 
       - name: Python setup
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: '3.8'
           cache: 'pipenv'

.github/workflows/release.yml

@@ -57,7 +57,7 @@ jobs:
           submodules: 'true'
 
       - name: Python setup
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: '3.8'
           cache: 'pipenv'