build(ci): update to latest circleci/node image (#11903)

Author: Splaktar

.circleci/config.yml

@@ -6,7 +6,7 @@
 # See http://blog.daemonl.com/2016/02/yaml.html
 # To validate changes, use an online parser, eg. http://yaml-online-parser.appspot.com/
 
-var_1: &docker_image circleci/node:10.20.0-browsers
+var_1: &docker_image circleci/node:14.1.0-browsers
 var_2: &cache_key angularjs-material-{{ checksum "package-lock.json" }}
 
 # Settings common to each job