fix(ktlint): Replace wildcard import

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/src/test/java/com/nextcloud/talk/json/ConversationConversionTest.kt

@@ -14,7 +14,9 @@ import com.nextcloud.talk.data.database.model.ConversationEntity
 import com.nextcloud.talk.models.json.conversations.ConversationEnums
 import com.nextcloud.talk.models.json.conversations.RoomOverall
 import com.nextcloud.talk.models.json.participants.Participant
-import org.junit.Assert.*
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNotNull
+import org.junit.Assert.assertTrue
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.junit.runners.Parameterized