Update to Node 12

End-of-Life Node 8

.gitlab-ci.yml

 # This file is a template, and might need editing before it works on your project.
 # Official framework image. Look for the different tagged releases at:
 # https://hub.docker.com/r/library/node/tags/
-image: node:8
+image: node:12
 
 stages:
   - lint

.node-version

-7.2.1
+12.18.2