Bump license-maven-plugin from 4.1 to 4.2

Bumps license-maven-plugin from 4.1 to 4.2.

---
updated-dependencies:
- dependency-name: com.mycila:license-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

vaadin-addon-template/pom.xml

@@ -111,7 +111,7 @@
 			<plugin>
 				<groupId>com.mycila</groupId>
 				<artifactId>license-maven-plugin</artifactId>
-				<version>4.1</version>
+				<version>4.2</version>
 				<configuration>
 					<properties>
 						<email>${project.organization.url}</email>