Bump org.codehaus.modello:modello-maven-plugin from 1.8.1 to 2.3.0

Bumps [org.codehaus.modello:modello-maven-plugin](https://github.com/codehaus-plexus/modello) from 1.8.1 to 2.3.0.
- [Release notes](https://github.com/codehaus-plexus/modello/releases)
- [Commits](codehaus-plexus/modello@modello-1.8.1...modello-2.3.0)

---
updated-dependencies:
- dependency-name: org.codehaus.modello:modello-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

appassembler-model/pom.xml

@@ -71,7 +71,7 @@
       <plugin>
         <groupId>org.codehaus.modello</groupId>
         <artifactId>modello-maven-plugin</artifactId>
-        <version>1.8.1</version>
+        <version>2.3.0</version>
         <executions>
           <execution>
             <goals>