pom.xml: update Maven plugins
pom.xml: update Maven plugins

Modernize the build by upgrading some of our Maven plugins.
The jdk specific profiles have also been deprecated.

Signed-off-by: Pierre-Alexandre Meyer <ff019a5748a52b5641624af88a54a2f0e46a9fb5@mouraf.org>

killbill/killbill-oss-parent