Bump checkstyle from 8.42 to 8.43

Bumps [checkstyle](https://github.com/checkstyle/checkstyle) from 8.42 to 8.43.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](checkstyle/checkstyle@checkstyle-8.42...checkstyle-8.43)

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -560,7 +560,7 @@
     <!-- The RC version used in the staging repository URL. -->
     <commons.rc.version>RC1</commons.rc.version>
     <checkstyle.version>3.1.2</checkstyle.version>
-    <checkstyle.dep.version>8.42</checkstyle.dep.version>
+    <checkstyle.dep.version>8.43</checkstyle.dep.version>
 
     <commons.site.path>collections</commons.site.path>
     <commons.scmPubUrl>https://svn.apache.org/repos/infra/websites/production/commons/content/proper/commons-collections</commons.scmPubUrl>