ci: explicitly use node v14 for playwright

Author: escapedcat

.github/workflows/playwright.yml

@@ -17,8 +17,7 @@ jobs:
         env:
           PUPPETEER_SKIP_CHROMIUM_DOWNLOAD: "true"
         with:
-          node-version: "14.x"
-          args: install
+          node-version: "14"
 
       - name: Install dependencies
         uses: borales/[email protected]