upgrade maven-checkstyle-plugin to 3.1.1

Description

Checkstyle is looking to remove some deprecated methods and CI noticed that you are not on the latest maven-checkstyle-plugin which is still using some deprecated methods.

Issue: checkstyle/checkstyle/issues/7190
PR: checkstyle/checkstyle#7778

Environment

None

Assignee

Nick Mancuso

Reporter

Nick Mancuso

Labels

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Suitable for new contributors

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Feedback Requested

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Fix versions

Priority

Minor
Configure