Merge pull request #1456 from SpiNNakerManchester/dependabot/maven/com.puppycrawl.tools-checkstyle-13.4.0

Bump com.puppycrawl.tools:checkstyle from 13.3.0 to 13.4.0

Author: rowleya

pom.xml

@@ -33,7 +33,7 @@ limitations under the License.
 		<forbidden.keywords.re>\bFIXME\b|Auto-generated method stub</forbidden.keywords.re>
 
 		<junit.version>6.0.3</junit.version>
-		<checkstyle.version>13.3.0</checkstyle.version>
+		<checkstyle.version>13.4.0</checkstyle.version>
 		<javadoc.version>3.12.0</javadoc.version>
 		<testing.version>3.5.5</testing.version>