Update actions/deploy-pages action to v5

Author: renovate[bot]

.github/workflows/docs.yml

@@ -90,7 +90,7 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v5
 
   smoke-test:
     name: Post-Deployment Smoke Test