fix: github_token and github_url optional

action.yml

@@ -7,11 +7,11 @@ branding:
 inputs:
   github_token:
     description: 'GitHub token or PAT token'
-    required: true
+    required: false
     default: ${{ github.token }}
   github_url:
     description: 'GitHub url or GitHub Enterprise url'
-    required: true
+    required: false
     default: ${{ github.server_url }}
   ssh:
     description: 'Specify if ssh should be used'