Bump org.codehaus.mojo:mrm-maven-plugin from 1.5.0 to 1.6.0

Bumps [org.codehaus.mojo:mrm-maven-plugin](https://github.com/mojohaus/mrm) from 1.5.0 to 1.6.0.
- [Release notes](https://github.com/mojohaus/mrm/releases)
- [Commits](mojohaus/mrm@1.5.0...1.6.0)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:mrm-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

maven-enforcer-extension/pom.xml

@@ -107,7 +107,7 @@
           <plugin>
             <groupId>org.codehaus.mojo</groupId>
             <artifactId>mrm-maven-plugin</artifactId>
-            <version>1.5.0</version>
+            <version>1.6.0</version>
             <configuration>
               <propertyName>repository.proxy.url</propertyName>
               <repositories>

maven-enforcer-plugin/pom.xml

@@ -214,7 +214,7 @@
           <plugin>
             <groupId>org.codehaus.mojo</groupId>
             <artifactId>mrm-maven-plugin</artifactId>
-            <version>1.5.0</version>
+            <version>1.6.0</version>
             <configuration>
               <propertyName>repository.proxy.url</propertyName>
               <repositories>