use cimg instead of circleci

Author: emilykl

.circleci/config.yml

@@ -217,7 +217,7 @@ jobs:
   make-baselines-virtual-webgl:
     parallelism: 8
     docker:
-      - image: circleci/python:3.8.9-browsers
+      - image: cimg/python:3.8.9-browsers
     working_directory: ~/plotly.js
     steps:
       - run: sudo apt-get update
@@ -241,7 +241,7 @@ jobs:
 
   make-baselines-mathjax3:
     docker:
-      - image: circleci/python:3.8.9-browsers
+      - image: cimg/python:3.8.9-browsers
     working_directory: ~/plotly.js
     steps:
       - run: sudo apt-get update
@@ -266,7 +266,7 @@ jobs:
   make-baselines:
     parallelism: 12
     docker:
-      - image: circleci/python:3.8.9-browsers
+      - image: cimg/python:3.8.9-browsers
     working_directory: ~/plotly.js
     steps:
       - run: sudo apt-get update
@@ -291,7 +291,7 @@ jobs:
   make-baselines-b64:
     parallelism: 12
     docker:
-      - image: circleci/python:3.8.9-browsers
+      - image: cimg/python:3.8.9-browsers
     working_directory: ~/plotly.js
     steps:
       - run: sudo apt-get update
@@ -371,7 +371,7 @@ jobs:
 
   make-exports:
     docker:
-      - image: circleci/python:3.8.9-browsers
+      - image: cimg/python:3.8.9-browsers
     working_directory: ~/plotly.js
     steps:
       - run: sudo apt-get update