feat: add tests for Node 16 (#202)

Author: MichaelDeBoey

.github/workflows/validate.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        node: [12, 14, 15]
+        node: [12, 14, 16]
     runs-on: ${{ matrix.os }}
     steps:
       - name: 🛑 Cancel Previous Runs