Drop node 8.x from build

Author: Soc Sieng

.github/workflows/push.yml

@@ -15,7 +15,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [8.x, 10.x, 12.x]
+        node-version: [10.x, 12.x]
 
     steps:
     - uses: actions/checkout@v2