Use Node 16

See [GitHub Actions: All Actions will begin running on Node16 instead of Node12](https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/)

action.yml

@@ -6,5 +6,5 @@ inputs:
     description: 'Version Spec of the version to use.  Examples: 10.x, 10.15.1, >=10.15.0'
     default: '3.8.2'
 runs:
-  using: 'node12'
+  using: 'node16'
   main: 'lib/setup-maven.js'