Drop support for node.js 10 and 12, add 16

Author: papandreou

.github/workflows/build.yml

@@ -14,9 +14,8 @@ jobs:
     strategy:
       matrix:
         node:
-          - '10'
-          - '12'
           - '14'
+          - '16'
     steps:
       - uses: actions/checkout@v2
       - name: Setup node