Move mockserver-junit-rule-no-dependencies to test scope

Fixes firebase#1016 by defining mockserver-junit-rule-no-dependencies as a test scoped dependency.

Author: timpeeters

pom.xml

@@ -497,6 +497,7 @@
             <groupId>org.mock-server</groupId>
             <artifactId>mockserver-junit-rule-no-dependencies</artifactId>
             <version>5.14.0</version>
+            <scope>test</scope>
         </dependency>
     </dependencies>
 </project>