Upgrade to Node 10.18.0 for CircleCI image

Author: ryanhefner

.circleci/config.yml

@@ -7,7 +7,7 @@ jobs:
   build:
     docker:
       # specify the version you desire here
-      - image: circleci/node:7.10
+      - image: circleci/node:10.18.0
 
       # Specify service dependencies here if necessary
       # CircleCI maintains a library of pre-built images