Bump maven-checkstyle-plugin from 3.2.2 to 3.3.0 (#513)

Author: dependabot[bot]

pom.xml

@@ -39,7 +39,7 @@
     <inrupt.rdf.wrapping.version>0.4.0</inrupt.rdf.wrapping.version>
 
     <!-- plugins -->
-    <checkstyle.plugin.version>3.2.2</checkstyle.plugin.version>
+    <checkstyle.plugin.version>3.3.0</checkstyle.plugin.version>
     <clean.plugin.version>3.2.0</clean.plugin.version>
     <compiler.plugin.version>3.11.0</compiler.plugin.version>
     <deploy.plugin.version>3.1.1</deploy.plugin.version>