fix: add python-dotenv dependency to cicd

Author: timerring

.circleci/config.yml

@@ -25,7 +25,7 @@ jobs:
           name: Install dependencies
           command: |
             python -m pip install --upgrade pip
-            pip install curl_cffi
+            pip install curl_cffi python-dotenv
       - run:
           name: Run V2EX signin
           command: |