ci: bump actions/configure-pages from 4 to 5 in the actions group

Bumps the actions group with 1 update: [actions/configure-pages](https://github.com/actions/configure-pages).


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

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

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

.github/workflows/docs.yml

@@ -31,7 +31,7 @@ jobs:
         run: mdbook build docs
 
       - name: Setup Pages
-        uses: actions/configure-pages@v4
+        uses: actions/configure-pages@v5
 
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3