[MINOR] Update checkstyle plugin version to avoid security vulnerability

snuspl / cruise

Cruise: A Distributed Machine Learning Framework with Automatic System Configuration

Apache License 2.0

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[MINOR] Update checkstyle plugin version to avoid security vulnerability #1281

Closed yunseong closed 5 years ago

yunseong commented 5 years ago

Github recently warned the potential security vulnerability, caused by Checkstyle plugin.

Known moderate severity security vulnerability detected in com.puppycrawl.tools:checkstyle < 8.18 defined in pom.xml.
pom.xml update suggested: com.puppycrawl.tools:checkstyle ~> 8.18.

This PR updates its version, to which is known to have fixed the issue.