[RFF] Checkstyle plugin 4.16

SonarQube Plugin Development
1

Hi,

Short description of the version:
Issue #180: upgrade to checkstyle 8.16

SQ versions compatibility: 5.6.6
JDK: 1.8

Change log URL: https://github.com/checkstyle/sonar-checkstyle/releases/tag/4.16

Download URL: https://github.com/checkstyle/sonar-checkstyle/releases/download/4.16/checkstyle-sonar-plugin-4.16.jar

Feedback period: 2 weeks

thanks,
Roman Ivanov