Merge pull request #58 from input-output-hk/coot/github-page

github-page: updated actions

Author: coot

.github/workflows/github-page.yml

@@ -64,5 +64,5 @@ jobs:
 
     - name: Deploy 🚀
       id: deployment
-      uses: actions/deploy-pages@v2
+      uses: actions/deploy-pages@v4