Update __init__.py

Added:
`request.encoding = request.apparent_encoding # <--- Fix is here`


Fixed:
 - Cyrllic response text encoding

gpt4free/usesless/__init__.py

@@ -117,6 +117,7 @@ class Completion:
 
         url = "https://ai.usesless.com/api/chat-process"
         request = requests.post(url, headers=headers, json=json_data)
+        request.encoding = request.apparent_encoding
         content = request.content
 
         response = Completion.__response_to_json(content)