Use node16 (#62)

* node16

* dispatch

* remove workflow_dispatch

Co-authored-by: Angus Clinch <ANGUS306@bailliegifford.com>

action.yml

@@ -38,6 +38,6 @@ outputs:
   output:
     description: The captured output of both stdout and stderr from the Ansible Playbook run
 runs:
-  using: node12
+  using: node16
   main: main.js
   post: post.js