chore: add tests for Node 16 (#357)

Author: MichaelDeBoey

.github/workflows/validate.yml

@@ -16,14 +16,14 @@ jobs:
     if: ${{ !contains(github.head_ref, 'all-contributors') }}
     strategy:
       matrix:
-        node: [10.14, 12, 14, 15]
+        node: [10.14, 12, 14, 16]
     runs-on: ubuntu-latest
     steps:
       - name: ⬇️ Checkout repo
         uses: actions/checkout@v2
 
       - name: ⎔ Setup node
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node }}
 
@@ -52,7 +52,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: ⎔ Setup node
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: 14