Bump org.apache.maven.plugins:maven-enforcer-plugin from 3.2.1 to 3.4.1

Bumps [org.apache.maven.plugins:maven-enforcer-plugin](https://github.com/apache/maven-enforcer) from 3.2.1 to 3.4.1.
- [Release notes](https://github.com/apache/maven-enforcer/releases)
- [Commits](apache/maven-enforcer@enforcer-3.2.1...enforcer-3.4.1)

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

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

appassembler-maven-plugin/pom.xml

@@ -429,7 +429,7 @@
           </plugin>
           <plugin>
             <artifactId>maven-enforcer-plugin</artifactId>
-            <version>3.2.1</version>
+            <version>3.4.1</version>
             <executions>
               <execution>
                 <id>mojo-enforcer-rules</id>