[MPIR-198] Upgrade to PMD 5.2.3 as soon as it is available

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1647166 13f79535-47bb-0310-9956-ffa450edef68
[MPIR-321] Disable/remove dev/contrib current time generation because it is broken

Code has been completely removed. Previous implementation has been retained in a separate branch: pre-MPIR-321 which will remain until MPIR-278 will be resolved.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1647192 13f79535-47bb-0310-9956-ffa450edef68