fix: update test for voice visibility from "unlisted" to "unlist"

Author: twangodev

tests/unit/test_types.py

@@ -168,8 +168,8 @@ def test_tts_request_custom_new_parameters(self):
 class TestVoiceVisibility:
     """Test Voice model with updated visibility."""
 
-    def test_voice_with_unlisted_visibility(self, sample_voice_response):
-        """Test Voice model with 'unlisted' visibility."""
-        sample_voice_response["visibility"] = "unlisted"
+    def test_voice_with_unlist_visibility(self, sample_voice_response):
+        """Test Voice model with 'unlist' visibility."""
+        sample_voice_response["visibility"] = "unlist"
         voice = Voice.model_validate(sample_voice_response)
-        assert voice.visibility == "unlisted"
+        assert voice.visibility == "unlist"