chore: upgrade to node20 to comply with GH transition (#288)

Author: aschwenn

action.yml

@@ -19,7 +19,7 @@ inputs:
     description: 'Line-separated list of dependencies to skip validation for.'
     required: false
 runs:
-  using: 'node16'
+  using: 'node20'
   main: 'dist/main.js'
 branding:
   icon: file