dependency: Update Checkstyle version to 12.1.0

Author: romani

pom.xml

@@ -45,7 +45,7 @@
 
         <!-- Checkstyle properties -->
         <maven.checkstyle.plugin.version>3.6.0</maven.checkstyle.plugin.version>
-        <checkstyle.version>10.26.1</checkstyle.version>
+        <checkstyle.version>12.1.0</checkstyle.version>
     </properties>
 
     <dependencyManagement>
@@ -263,4 +263,4 @@
         </plugins>
     </build>
 
-</project>
+</project>