Updated mockito version.

Author: gmessner

pom.xml

@@ -51,7 +51,7 @@
 		<activation.version>1.2.1</activation.version>
 
 		<junit.version>4.12</junit.version>
-		<mockito.version>2.27.0</mockito.version>
+		<mockito.version>2.28.2</mockito.version>
 		<hamcrest.version>1.3</hamcrest.version>
 		<systemRules.version>1.19.0</systemRules.version>