trying to cache playwright in github action

.github/workflows/django-tests.yml

@@ -106,6 +106,16 @@ jobs:
           # deploy vue app twice
           tar xzf babex-vue.tar.gz -C lab/main/static/
           tar xzf babex-vue.tar.gz -C parent/parent/static/
+      - name: Cache playwright binaries
+        uses: actions/cache@v3
+        id: playwright-cache
+        with:
+          path: |
+            ~/.cache/ms-playwright
+            key: ${{ runner.os }}-playwright-${{ env.PLAYWRIGHT_VERSION }}
+      - name: Get installed Playwright version
+        id: playwright-version
+        run: echo "PLAYWRIGHT_VERSION=$(node -e "console.log(require('./package-lock.json').dependencies['@playwright/test'].version)")" >> $GITHUB_ENV
       - name: Integration tests
         run: |
           cd ${{ matrix.app }}