Install and cache playwright

.github/workflows/frontend-jobs.yml

@@ -96,7 +96,20 @@ jobs:
         run: |
           npm ci
         working-directory: ./frontend
-      - name: Unit tests
+      - name: Get Playwright version
+        working-directory: ./frontend
+        run: echo "PLAYWRIGHT_VERSION=$(jq -r '.packages["node_modules/@playwright/test"].version' package-lock.json)" >> $GITHUB_ENV
+      - name: Cache browser binaries
+        id: cache-browser-binaries
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/ms-playwright
+          key: ${{ runner.os }}-playwright-${{ env.PLAYWRIGHT_VERSION }}
+      - name: Install playwright browsers
+        if: steps.cache-browser-binaries.outputs.cache-hit != 'true'
+        run: |
+          npx --yes playwright install
+      - name: e2e tests
         run: |
           npm run test:e2e
         working-directory: ./frontend