Update .gitlab-ci.yml

.gitlab-ci.yml

@@ -31,6 +31,7 @@ before_script:
   # - conda config --add channels https://mirrors.ustc.edu.cn/anaconda/cloud/conda-forge/
   - pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple
   - conda info -a
+  - pip install twine
 
 # test:
 #   script: