Pin Node version temporarily to v11

Author: notlmn

.github/workflows/deployment.yml

@@ -22,7 +22,7 @@ jobs:
     - uses: actions/checkout@v2
     - uses: actions/setup-node@v1
       with:
-        node-version: 12
+        node-version: 11
     - run: npm install
     - run: npm test # This includes the build
     - uses: fregante/daily-version-action@v1