Bump actions/configure-pages from 4 to 5

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

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

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

.github/workflows/rss.yml

@@ -38,7 +38,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup Pages
-        uses: actions/configure-pages@v4
+        uses: actions/configure-pages@v5
       - name: Build RSS page
         run: |
           mkdir -p output