Bump mockito-core from 1.9.5 to 2.28.2

Author: slachiewicz

pom.xml

@@ -128,7 +128,7 @@ under the License.
     <dependency>
       <groupId>org.mockito</groupId>
       <artifactId>mockito-core</artifactId>
-      <version>1.9.5</version>
+      <version>2.28.2</version>
       <scope>test</scope>
     </dependency>
     <dependency>