Bump com.puppycrawl.tools:checkstyle from 10.19.0 to 10.20.0 (#6076)

Author: dependabot[bot]

pom.xml

@@ -125,7 +125,7 @@
                     <dependency>
                     <groupId>com.puppycrawl.tools</groupId>
                     <artifactId>checkstyle</artifactId>
-                    <version>10.19.0</version>
+                    <version>10.20.0</version>
                     </dependency>
                 </dependencies>
             </plugin>