fix: gh action

action.yml

@@ -11,12 +11,21 @@ inputs:
 outputs:
   token:
     description: 'The generated GitHub App token'
+    value: ${{ steps.main.outputs.token }}
   expires_at:
     description: 'Token expiration timestamp'
+    value: ${{ steps.main.outputs.expires_at }}
   installation_id:
     description: 'GitHub App installation ID'
+    value: ${{ steps.main.outputs.installation_id }}
 
 runs:
-  using: 'node20'
-  pre: 'npm install -g yarn && yarn'
-  main: 'action.js'
+  using: 'composite'
+  steps:
+    - shell: bash
+      run: |
+        npm install -g yarn
+        yarn
+    - id: main
+      shell: node20
+      run: action.js