Update actions/upload-pages-artifact to v4

Author: Kaleidosium

.github/workflows/static.yml

@@ -61,7 +61,7 @@ jobs:
         uses: actions/configure-pages@v5
 
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
         with:
           path: 'doc/docs/.vitepress/dist'