[ECO-5338][Unit test] Upgraded dependencies as per review comments, optimized imports

Author: sacOO7

gradle/libs.versions.toml

@@ -21,9 +21,9 @@ okhttp = "4.12.0"
 test-retry = "1.6.0"
 kotlin = "2.1.10"
 coroutine = "1.9.0"
-mockk = "1.13.13"
+mockk = "1.14.2"
 turbine = "1.2.0"
-ktor = "3.0.1"
+ktor = "3.1.0"
 jetbrains-annoations = "26.0.2"
 
 [libraries]

live-objects/src/test/kotlin/io/ably/lib/objects/unit/setup/UnitTest.kt

@@ -1,6 +1,5 @@
 package io.ably.lib.objects.unit.setup
 
-import io.ably.lib.objects.integration.setup.ensureAttached
 import io.ably.lib.realtime.AblyRealtime
 import io.ably.lib.realtime.Channel
 import io.ably.lib.realtime.ChannelState