Update pom.xml

2 jobs for master in 11 seconds (queued for 2 seconds)
Status Name Job ID Coverage
failed masterJob #157787


passed masterJob #155496


Name Stage Failure
masterJob Test There is an unknown failure, please try again
[INFO] ------------------------------------------------------------------------
[ERROR] Plugin de.monticore.mojo:monticore-maven-plugin:5.0.0 or one of its dependencies could not be resolved: Failed to read artifact descriptor for de.monticore.mojo:monticore-maven-plugin:jar:5.0.0: Could not transfer artifact de.monticore.mojo:monticore-maven-plugin:pom:5.0.0 from/to se-nexus (https://nexus.se.rwth-aachen.de/content/groups/public): sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target -> [Help 1]
[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] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException
ERROR: Job failed: exit code 1