Update .gitlab-ci.yml

1 job from master in 4 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
failed #9479
build

00:00:04

 
Name Stage Failure
failed
build Build
[ERROR] 
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
ERROR: Job failed: exit status 1