Update config.yml

chore: Switching this repo's circleci config to use new cimg/node instead of legacy circleci/node

Author: Anthony Mayer

.circleci/config.yml

@@ -21,7 +21,7 @@ jobs:
           paths: .
   publish:
     docker:
-      - image: circleci/node:12
+      - image: cimg/node:12
     environment:
       - PATH: '~/bin:/opt/yarn/yarn-v1.5.1/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'
     steps: