Update dependency org.apache.maven.plugins:maven-checkstyle-plugin to v3.6.0

Author: xdev-renovate

pom.xml

@@ -40,7 +40,7 @@
 					<plugin>
 						<groupId>org.apache.maven.plugins</groupId>
 						<artifactId>maven-checkstyle-plugin</artifactId>
-						<version>3.5.0</version>
+						<version>3.6.0</version>
 						<dependencies>
 							<dependency>
 								<groupId>com.puppycrawl.tools</groupId>

vaadin-simple-grid-filter/pom.xml

@@ -308,7 +308,7 @@
 					<plugin>
 						<groupId>org.apache.maven.plugins</groupId>
 						<artifactId>maven-checkstyle-plugin</artifactId>
-						<version>3.5.0</version>
+						<version>3.6.0</version>
 						<dependencies>
 							<dependency>
 								<groupId>com.puppycrawl.tools</groupId>