updated frontend workflow

.github/workflows/frontend-tests.yaml

@@ -0,0 +1,27 @@
+name: Frontend tests
+
+on:
+  pull_request:
+    paths:
+      - 'frontend/**'
+      - '.github/workflows/frontend-test.yaml'
+      - 'package.json'
+      - 'yarn.lock'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 20
+
+      - name: Install dependencies
+        run: yarn
+
+      - name: Run tests
+        run: yarn test