chore: update frontend workflow

Backport of flarum@356f976

Author: DavideIadeluca

.github/workflows/REUSABLE_frontend.yml

@@ -116,10 +116,10 @@ jobs:
 
     steps:
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Node
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ inputs.node_version }}
           cache: ${{ inputs.js_package_manager }}