Update action.yml

Updating the node run version to 16 as 12 is being removed by GitHub.

Author: wc-whiteheadd

action.yml

@@ -13,5 +13,5 @@ inputs:
     required: false
     default: 'json'
 runs:
-  using: 'node12'
+  using: 'node16'
   main: 'dist/index.js'