update org.mockito:mockito-core (test) 2.27.0 -> 3.0.0

Author: TheSnoozer

pom.xml

@@ -59,7 +59,7 @@
 
     <jgit.version>5.2.2.201904231744-r</jgit.version>
     <junit.version>5.5.1</junit.version>
-    <mockito.version>2.27.0</mockito.version>
+    <mockito.version>3.0.0</mockito.version>
 
     <fest-assert.version>1.4</fest-assert.version>
   </properties>