Bump checkstyle from 6.19 to 8.29

Bumps [checkstyle](https://github.com/checkstyle/checkstyle) from 6.19 to 8.29.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](checkstyle/checkstyle@checkstyle-6.19...checkstyle-8.29)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -243,7 +243,7 @@
           <dependency>
             <groupId>com.puppycrawl.tools</groupId>
             <artifactId>checkstyle</artifactId>
-            <version>6.19</version>
+            <version>8.29</version>
           </dependency>
         </dependencies>
       </plugin>