config: bump checkstyle version

Author: romani

patch-diff-report-tool/pom.xml

@@ -9,7 +9,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <checkstyle.version>10.2</checkstyle.version>
+        <checkstyle.version>10.3</checkstyle.version>
         <checkstyle.configLocation>https://raw.githubusercontent.com/checkstyle/checkstyle/checkstyle-${checkstyle.version}/config/checkstyle_checks.xml</checkstyle.configLocation>
         <maven.plugin.checkstyle.version>3.1.1</maven.plugin.checkstyle.version>
         <maven.compiler.source>1.8</maven.compiler.source>