💚 change python version

.circleci/config.yml

@@ -17,7 +17,7 @@ jobs:
       # CircleCI maintains a library of pre-built images
       # documented at https://circleci.com/docs/2.0/circleci-images/
       # - image: circleci/postgres:9.4
-      - image: circleci/python:3.6.4
+      - image: circleci/python:3.8.5
         environment: # environment variables for the Postgres container.
           POSTGRES_USER: root
           POSTGRES_DB: circle_test