Use node16

hsbt · hsbt · commit 658167c5483e · 2023-03-07T10:49:57.000+09:00
diff --git a/action.yml b/action.yml
@@ -5,5 +5,5 @@ inputs:
   payload:
     description: Raw Slack incoming webhook payload
 runs:
-  using: 'node12'
+  using: 'node16'
   main: 'lib/main.js'
