Bump extra-enforcer-rules from 1.0-beta-9 to 1.2 (#51)

Bumps [extra-enforcer-rules](https://github.com/mojohaus/extra-enforcer-rules) from 1.0-beta-9 to 1.2.
- [Release notes](https://github.com/mojohaus/extra-enforcer-rules/releases)
- [Commits](https://github.com/mojohaus/extra-enforcer-rules/commits/extra-enforcer-rules-1.2)

pom.xml

@@ -485,7 +485,7 @@
                         <dependency>
                             <groupId>org.codehaus.mojo</groupId>
                             <artifactId>extra-enforcer-rules</artifactId>
-                            <version>1.0-beta-9</version>
+                            <version>1.2</version>
                         </dependency>
                     </dependencies>
                 </plugin>