Update out of date Vercel action.

Author: MerchantPug

.github/workflows/on-push.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: amondnet/vercel-action@v20
+      - uses: amondnet/vercel-action@v25
         with:
           vercel-token: ${{ secrets.VERCEL_TOKEN }}
           github-token: ${{ secrets.GITHUB_TOKEN }}