Update circleci/node Docker tag to v10.20.1 (#36)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

.circleci/config.yml

@@ -7,7 +7,7 @@ jobs:
   build:
     docker:
       # specify the version you desire here
-      - image: circleci/node:10.20.0
+      - image: circleci/node:10.20.1
 
       # Specify service dependencies here if necessary
       # CircleCI maintains a library of pre-built images