install dependencies in deploy step

.circleci/config.yml

@@ -12,16 +12,13 @@ jobs:
       - TARGET_BRANCH: gh-pages
     steps:
       - checkout
-      - run:
-          name: Install deps
-          command: |
-            python -m venv venv
-            source venv/bin/activate
-            pip install --user -r requirements.txt
       - deploy:
           name: Deploy
           command: |
             if [ $CIRCLE_BRANCH == $SOURCE_BRANCH ]; then
+              python -m venv venv
+              source venv/bin/activate
+              pip install --user -r requirements.txt
               source venv/bin/activate
 
               git config --global user.email $GH_EMAIL