Bump com.puppycrawl.tools:checkstyle from 10.21.1 to 10.21.2 (#632)

Author: dependabot[bot]

pom.xml

@@ -124,7 +124,7 @@
             <dependency>
               <groupId>com.puppycrawl.tools</groupId>
               <artifactId>checkstyle</artifactId>
-              <version>10.21.1</version>
+              <version>10.21.2</version>
             </dependency>
           </dependencies>
           <executions>