chore: remove node 12 from test matrix

Author: justinedelson

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        node-version: [12.x, 14.x, 16.x]
+        node-version: [14.x, 16.x]
         include:
           - os: ubuntu-latest
             node-version: 14.x