fix(generate-page-preview-image): nuxtは14でしかビルドできなかった (#207)

Author: book000

.github/workflows/generate-page-preview-image.yml

@@ -29,7 +29,7 @@ jobs:
 
       - uses: actions/setup-node@v2
         with:
-          node-version: 16
+          node-version: 14
 
       - name: Get yarn cache directory path
         id: yarn-cache-dir-path
@@ -65,7 +65,6 @@ jobs:
         working-directory: ./content/.github/gen-page-preview/
         run: |
           yarn
-          npm install -D @playwright/test
 
       - name: Generate page screenshots
         working-directory: ./content/.github/gen-page-preview/