Maven pom.xml(deps): Bump maven-plugin-plugin from 3.6.0 to 3.9.0

Bumps [maven-plugin-plugin](https://github.com/apache/maven-plugin-tools) from 3.6.0 to 3.9.0.
- [Release notes](https://github.com/apache/maven-plugin-tools/releases)
- [Commits](apache/maven-plugin-tools@maven-plugin-tools-3.6.0...maven-plugin-tools-3.9.0)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-plugin-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

tsmodelsgen-maven-plugin/pom.xml

@@ -194,7 +194,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-plugin-plugin</artifactId>
-                 <version>3.6.0</version>
+                 <version>3.9.0</version>
                 <configuration>
                     <goalPrefix>windup-tsmodelsgen</goalPrefix>
                     <skipErrorNoDescriptorsFound>true</skipErrorNoDescriptorsFound>