Use setup-node@v4's new node-version-file directly (#3435)

web-app/playwright/jobs.yaml

@@ -49,14 +49,11 @@ jobs:
     steps:
       - name: Check out code
         uses: actions/checkout@v3
-      - name: Read .nvmrc
-        id: node_version
-        run: echo "$(cat .nvmrc)" && echo "NVMRC=$(cat .nvmrc)" >> $GITHUB_ENV
       - name: Enable Corepack
         run: corepack enable
       - uses: actions/setup-node@v4
         with:
-          node-version: ${{ env.NVMRC }}
+          node-version-file: .nvmrc
           cache: "yarn"
           cache-dependency-path: web-app/yarn.lock
       - uses: actions/cache@v4