Updated workflow file to remove deprecated secrets

Author: Christy

.github/workflows/ci.yml

@@ -27,8 +27,7 @@ jobs:
       - name: Lighthouse
         uses: shopify/lighthouse-ci-action@v1
         with:
-          app_id: ${{ secrets.SHOP_APP_ID }}
-          app_password: ${{ secrets.SHOP_APP_PASSWORD }}
+          access_token: ${{ secrets.SHOP_ACCESS_TOKEN }}
           store: ${{ secrets.SHOP_STORE }}
           password: ${{ secrets.SHOP_PASSWORD }}
           lhci_github_app_token: ${{ secrets.LHCI_GITHUB_APP_TOKEN }}