fix: remove pip cache config to avoid missing requirements.txt error

Author: aiqubits

.github/workflows/gpt-pr-review.yml

@@ -28,7 +28,6 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: "3.11"
-          cache: pip
 
       - name: Install dependencies
         run: pip install --disable-pip-version-check requests