circleci config go back to using get-pip version 2.7

.circleci/config.yml

@@ -64,7 +64,7 @@ aliases:
       - run:
           name: "deploy to staging"
           command: |
-            curl https://bootstrap.pypa.io/3.4/get-pip.py -o get-pip.py
+            curl https://bootstrap.pypa.io/2.7/get-pip.py -o get-pip.py
             python get-pip.py pip==20.3.4
             pip install -r requirements.txt
             npm run deploy