remove node 8 due to build issues

Author: robinweser

.github/workflows/push.yml

@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-18.04]
-        node: [8, 12, 13]
+        node: [12, 13]
     steps:
     - uses: actions/checkout@v1
     - uses: actions/setup-node@v1