Bump org.apache.maven.plugins:maven-enforcer-plugin from 3.4.1 to 3.5.0

Bumps [org.apache.maven.plugins:maven-enforcer-plugin](https://github.com/apache/maven-enforcer) from 3.4.1 to 3.5.0.
- [Release notes](https://github.com/apache/maven-enforcer/releases)
- [Commits](apache/maven-enforcer@enforcer-3.4.1...enforcer-3.5.0)

---
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] <support@github.com>

specification/pom.xml

@@ -70,7 +70,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-enforcer-plugin</artifactId>
-                <version>3.4.1</version>
+                <version>3.5.0</version>
                 <executions>
                     <execution>
                         <id>enforce-maven</id>