Bump Mockito from 2.28.2 to 3.0.0 (#995)

Updates `mockito-core` and `mockito-junit-jupiter` from 2.28.2 to 3.0.0
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v2.28.2...v3.0.0)

Author: dependabot-preview[bot]

exonum-java-binding/pom.xml

@@ -116,7 +116,7 @@
     <junit.jupiter.version>5.5.0</junit.jupiter.version>
     <powermock.version>2.0.2</powermock.version>
     <protobuf.version>3.8.0</protobuf.version>
-    <mockito-core.version>2.28.2</mockito-core.version>
+    <mockito-core.version>3.0.0</mockito-core.version>
     <guava.version>28.0-jre</guava.version>
     <vertx.version>3.7.1</vertx.version>
     <equalsverifier.version>3.1.9</equalsverifier.version>

exonum-java-binding/service-archetype/src/main/resources/archetype-resources/pom.xml

@@ -17,7 +17,7 @@
     <java.compiler.target>8</java.compiler.target>
     <junit.jupiter.version>5.5.0</junit.jupiter.version>
     <hamcrest.version>2.1</hamcrest.version>
-    <mockito.version>2.28.2</mockito.version>
+    <mockito.version>3.0.0</mockito.version>
     <exonum.version>0.7.0-SNAPSHOT</exonum.version>
   </properties>
 

exonum-light-client/pom.xml

@@ -71,7 +71,7 @@
     <lombok.version>1.18.8</lombok.version>
     <!--Test dependencies-->
     <junit.jupiter.version>5.5.0</junit.jupiter.version>
-    <mockito.version>2.27.0</mockito.version>
+    <mockito.version>3.0.0</mockito.version>
     <hamcrest.version>2.1</hamcrest.version>
     <equalsverifier.version>3.1.9</equalsverifier.version>
     <!--Plugins-->