[NIFI-9618] Upgrade Checkstyle to 9.2.1

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.16.0
• Fix Version/s: 1.16.0
• Component/s: Tools and Build
• Assignee: David Handermann
• Reporter: David Handermann
• Created: 21/Jan/22 17:54
• Updated: 22/Jan/22 02:09
• Resolved: 22/Jan/22 02:09

Description

Following recent updates to the maven-checkstyle-plugin version, the plugin now reports the following warnings:

Warning:  Old version of checkstyle detected. Consider updating to >= v8.30
Warning:  For more information see: https://maven.apache.org/plugins/maven-checkstyle-plugin/examples/upgrading-checkstyle.html

Upgrading to the latest version of the checkstyle library will eliminate this warning.

Issue Links

• links to: GitHub Pull Request #5700