Update dependency org.codehaus.mojo:exec-maven-plugin to v3.6.1

Author: xdev-renovate

vaadin-package-json-optimizer-demo/pom.xml

@@ -182,7 +182,7 @@
 			<plugin>
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>exec-maven-plugin</artifactId>
-				<version>3.5.1</version>
+				<version>3.6.1</version>
 				<executions>
 					<execution>
 						<id>patch-package-json-overrides</id>