Update Mockito version

src/test/java/fr/xephi/authme/task/CleanupTaskTest.java

@@ -6,7 +6,7 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
-import org.mockito.runners.MockitoJUnitRunner;
+import org.mockito.junit.MockitoJUnitRunner;
 
 import java.util.List;
 

src/test/java/fr/xephi/authme/task/LimboPlayerTaskManagerTest.java

@@ -17,7 +17,7 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
-import org.mockito.runners.MockitoJUnitRunner;
+import org.mockito.junit.MockitoJUnitRunner;
 
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyLong;

src/test/java/fr/xephi/authme/task/purge/PurgeServiceTest.java

@@ -16,7 +16,7 @@ import org.junit.runner.RunWith;
 import org.mockito.ArgumentCaptor;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
-import org.mockito.runners.MockitoJUnitRunner;
+import org.mockito.junit.MockitoJUnitRunner;
 
 import java.util.Arrays;
 import java.util.Calendar;

src/test/java/fr/xephi/authme/task/purge/PurgeTaskTest.java

@@ -19,7 +19,7 @@ import org.mockito.ArgumentCaptor;
 import org.mockito.Captor;
 import org.mockito.Mock;
 import org.mockito.invocation.InvocationOnMock;
-import org.mockito.runners.MockitoJUnitRunner;
+import org.mockito.junit.MockitoJUnitRunner;
 import org.mockito.stubbing.Answer;
 
 import java.util.ArrayList;