Update actions/setup-node action to v7

Author: renovate[bot]

.github/workflows/build-assets.yml

@@ -19,7 +19,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v7
         with:
           node-version: ${{ matrix.node-version }}