Update mockito version.

stefanseifert · stefanseifert · commit 249ebf5b3852 · 2016-11-11T16:44:00.000+01:00
diff --git a/parent_toplevel/pom.xml b/parent_toplevel/pom.xml
@@ -140,7 +140,7 @@
       <dependency>
         <groupId>org.mockito</groupId>
         <artifactId>mockito-core</artifactId>
-        <version>2.2.12</version>
+        <version>2.2.15</version>
       </dependency>
       <dependency>
         <groupId>org.hamcrest</groupId>
