Bump com.puppycrawl.tools:checkstyle from 10.21.2 to 10.21.3 (#995)

Author: dependabot[bot]

pom.xml

@@ -206,7 +206,7 @@
                         <dependency>
                             <groupId>com.puppycrawl.tools</groupId>
                             <artifactId>checkstyle</artifactId>
-                            <version>10.21.2</version>
+                            <version>10.21.3</version>
                         </dependency>
                     </dependencies>
                 </plugin>