Bump outdated maven plugins

[cdietrich]

Outdated Plugins (Requiring Update)

Plugin	Current Version	Latest Version	Priority
maven-surefire-plugin	3.0.0	3.5.5	High - 5 major versions behind
maven-javadoc-plugin	3.5.0	3.11.0	High - 6 major versions behind
maven-gpg-plugin	1.6	3.2.7	High - security updates needed
maven-compiler-plugin	3.11.0	3.15.0	Medium - 4 versions behind
maven-resources-plugin	3.1.0	3.3.1	Medium
maven-deploy-plugin	3.0.0	3.1.4	Medium
maven-jar-plugin	3.3.0	3.5.0	Medium - 2 versions behind
maven-clean-plugin	3.2.0	3.4.0	Medium
maven-bundle-plugin	5.1.9	6.0.0	Medium
maven-source-plugin	3.2.1	3.3.1	Low
exec-maven-plugin	3.1.0	3.2.1	Low
versions-maven-plugin	2.14.2	2.17.1	Low
build-helper-maven-plugin	3.3.0	3.4.0	Low
central-publishing-maven-plugin	0.8.0	0.18.0	Low
eclipse-jarsigner-plugin	1.3.4	1.4.0	Low

[cdietrich]

currently dont find the time to work on this. also dont know how compatibility looks like

maven we also should bump maven(wrapper) version in the same go
and also check the wizards

The wizard should be updated to use:

Plugin	Location	Current	Latest	Priority
maven-surefire-plugin	ParentProjectDescriptor.xtend:385	3.0.0	3.5.5	High
maven-clean-plugin	ParentProjectDescriptor.xtend:367	3.2.0	3.4.0	Medium
exec-maven-plugin	RuntimeProjectDescriptor.xtend:338	3.0.0	3.2.1	Low
build-helper-maven-plugin	RuntimeProjectDescriptor.xtend:410	3.3.0	3.4.0	Low
maven-assembly-plugin	RuntimeProjectDescriptor.xtend:463	3.4.1	3.6.2	Low

all others to be checked