Upgrade Maven enforcer plugin

Author: Bananeweizen

pom.xml

@@ -241,7 +241,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-enforcer-plugin</artifactId>
-                    <version>3.0.0-M2</version>
+                    <version>3.0.0-M3</version>
                     <executions>
                         <execution>
                             <id>enforce-maven</id>