[MPH-199] Bump mockito-core from 2.28.2 to 4.11.0

Author: slawekjaranowski

pom.xml

@@ -207,7 +207,8 @@
     <dependency>
       <groupId>org.mockito</groupId>
       <artifactId>mockito-core</artifactId>
-      <version>2.28.2</version>
+      <!-- 5.x requires at least Java 11 -->
+      <version>4.11.0</version>
       <scope>test</scope>
     </dependency>
   </dependencies>