chore: update node to 14 and 16 in ci (#100)

Author: byCedric

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        node: [12, 14]
+        node: [14, 16]
         os:
           - macos-latest
           - ubuntu-latest