DRILL-7942 Update Mockito to latest 3.x (#2245)

diff --git a/pom.xml b/pom.xml
index e567330..c6a737e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -76,7 +76,7 @@
     <wiremock.standalone.version>2.23.2</wiremock.standalone.version>
     <jmockit.version>1.47</jmockit.version>
     <logback.version>1.2.3</logback.version>
-    <mockito.version>2.28.2</mockito.version>
+    <mockito.version>3.11.0</mockito.version>
     <!--
       Currently Hive storage plugin only supports Apache Hive 3.1.2 or vendor specific variants of the
       Apache Hive 2.3.2. If the version is changed, make sure the jars and their dependencies are updated,