update mockito testing dependency

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1775349 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 0b76181..4f402ee 100644
--- a/pom.xml
+++ b/pom.xml
@@ -86,7 +86,7 @@
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-core</artifactId>
-            <version>1.10.19</version>
+            <version>2.3.7</version>
             <scope>test</scope>
         </dependency>
     </dependencies>