chore: add node16 to CI matrix

Author: lukeed

.github/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
     timeout-minutes: 3
     strategy:
       matrix:
-        nodejs: [8, 10, 12, 14]
+        nodejs: [8, 10, 12, 14, 16]
         os: [ubuntu-latest, windows-latest, macOS-latest]
     steps:
     - uses: actions/checkout@v2
@@ -42,7 +42,7 @@ jobs:
       run: nyc --include=src npm test
 
     - name: Report
-      if: matrix.nodejs >= 14 && matrix.os == 'ubuntu-latest'
+      if: matrix.nodejs >= 16 && matrix.os == 'ubuntu-latest'
       run: |
         nyc report --reporter=text-lcov > coverage.lcov
         bash <(curl -s https://codecov.io/bash)