Update test-on-push.yml with selenium services

- Add services.selenium to set up the Selenium server using the selenium/standalone-chrome:latest Docker image. The server will be accessible on port 4444.
- Add enchancement step "Wait for Selenium" to run a loop to check if the Selenium server is ready. It uses nc (Netcat) to test the connection to localhost:4444 and waits until it is available.

.github/workflows/test-on-push.yml

@@ -1,25 +1,39 @@
 name: test-on-push
-run-name: Test on push to ${{ github.ref }} by ${{ github.actor }}
+run-name: Test on push to ${{ github.ref_name }} by ${{ github.actor }}
 on: push
 jobs:
   test:
     runs-on: ubuntu-latest
-
+    services:
+      selenium:
+        image: selenium/standalone-chrome:latest
+        ports:
+          - 4444:4444
     strategy:
       matrix:
         node-version: [20.x, 21.x, 22.x]
-
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
-
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-
+      - name: Cache Node.js modules
+        uses: actions/cache@v4
+        with:
+          path: node_modules
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-
       - name: Install dependencies
         run: npm install
-
+      - name: Wait for Selenium
+        run: |
+          while ! nc -z localhost 4444; do
+            echo "Waiting for Selenium to be ready..."
+            sleep 1
+          done
+          echo "Selenium is ready!"
       - name: Run tests
         run: npm run test