Update actions/upload-pages-artifact action to v5

Author: renovate[bot]

.github/workflows/static.yml

@@ -43,7 +43,7 @@ jobs:
           mkdir -p pages
           ./tools/gendocs.sh > pages/index.html
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v4
+        uses: actions/upload-pages-artifact@v5
         with:
           path: 'pages'
       - name: Deploy to GitHub Pages