Merge pull request #441 from maxmind/dependabot/maven/com.puppycrawl.tools-checkstyle-10.21.0

Bump com.puppycrawl.tools:checkstyle from 10.20.2 to 10.21.0

Author: oschwald

pom.xml

@@ -133,7 +133,7 @@
                     <dependency>
                         <groupId>com.puppycrawl.tools</groupId>
                         <artifactId>checkstyle</artifactId>
-                        <version>10.20.2</version>
+                        <version>10.21.0</version>
                     </dependency>
                 </dependencies>
                 <executions>