Bump maven-model from 3.8.6 to 3.9.0

Bumps [maven-model](https://github.com/apache/maven) from 3.8.6 to 3.9.0.
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](https://github.com/apache/maven/compare/maven-3.8.6...maven-3.9.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -69,7 +69,7 @@
         <dependency>
             <groupId>org.apache.maven</groupId>
             <artifactId>maven-model</artifactId>
-            <version>3.8.6</version>
+            <version>3.9.0</version>
         </dependency>
         <dependency>
             <groupId>net.dv8tion</groupId>