Bump actions/configure-pages from 3 to 4

Bumps [actions/configure-pages](https://github.com/actions/configure-pages) from 3 to 4.
- [Release notes](https://github.com/actions/configure-pages/releases)
- [Commits](actions/configure-pages@v3...v4)

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

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

Author: dependabot[bot]

.github/workflows/jekyll_build.yml

@@ -30,7 +30,7 @@ jobs:
 
     - name: 📄 setup pages
       id: pages
-      uses: actions/configure-pages@v3
+      uses: actions/configure-pages@v4
 
     - name: 🔨 install dependencies & build site
       uses: actions/[email protected]