bot: workaround the GH bug that GHA ref does not work

Author: kezhenxu94

chatgpt-cli/action.yaml

@@ -8,11 +8,15 @@ runs:
   steps:
     - if: runner.os == 'Linux'
       shell: bash
+      env:
+        GH_ACTION_REF: ${{ github.action_ref || github.ref_name }}
       run: |
-        curl -Ls https://github.com/kezhenxu94/chatgpt-java/releases/download/${{ github.action_ref }}/chatgpt-cli.ubuntu -o chatgpt-cli
+        curl -Ls https://github.com/kezhenxu94/chatgpt-java/releases/download/$GH_ACTION_REF/chatgpt-cli.ubuntu -o chatgpt-cli
         sudo install chatgpt-cli /usr/local/bin/chatgpt
     - if: runner.os == 'macOS'
       shell: bash
+      env:
+        GH_ACTION_REF: ${{ github.action_ref || github.ref_name }}
       run: |
-        curl -Ls https://github.com/kezhenxu94/chatgpt-java/releases/download/${{ github.action_ref }}/chatgpt-cli.macos -o chatgpt-cli
+        curl -Ls https://github.com/kezhenxu94/chatgpt-java/releases/download/$GH_ACTION_REF/chatgpt-cli.macos -o chatgpt-cli
         sudo install chatgpt-cli /usr/local/bin/chatgpt