pin version of mujo-code/puppeteer-headful

Author: mymindstorm

.github/workflows/main.yml

@@ -42,7 +42,7 @@ jobs:
   run-tests:
     runs-on: ubuntu-latest
     name: Run tests
-    needs: [ build ]
+    needs: [build]
 
     steps:
       - uses: actions/checkout@v2
@@ -53,9 +53,9 @@ jobs:
       - name: Install dependencies
         run: npm ci
         env:
-          PUPPETEER_SKIP_CHROMIUM_DOWNLOAD: 'true'
+          PUPPETEER_SKIP_CHROMIUM_DOWNLOAD: "true"
 
       - name: Test code
-        uses: mujo-code/puppeteer-headful@master
+        uses: mujo-code/puppeteer-headful@18.9.0
         with:
           args: npm test