Update action.yml (#27)

Author: zgosalvez

Diff for: action.yml

@@ -4,7 +4,7 @@ name: 'Ensure SHA Pinned Actions'
 description: 'Ensure that GitHub Actions are pinned to full length commit SHAs'
 author: 'Zennon Gosalvez'
 runs:
-  using: 'node12'
+  using: 'node16'
   main: 'dist/index.js'
 branding:
   icon: shield