Fix typos found by codespell (#31243)

* Fix typos found by codespell

* Fix typos found by codespell

* codespell: Furture  ==> Future

* Update test_config_flow.py

* Update __init__.py

* Spellcheck: successfull  ==> successful

* Codespell: unsuccesful  ==> unsuccessful

* Codespell: cant  ==> can't

* Codespell: firware ==> firmware

* Codespell: mimick  ==> mimic

tests/components/unifi/test_controller.py

@@ -307,7 +307,7 @@ async def test_get_controller_controller_unavailable(hass):
 
 
 async def test_get_controller_unknown_error(hass):
-    """Check that get_controller can handle unkown errors."""
+    """Check that get_controller can handle unknown errors."""
     with patch(
         "aiounifi.Controller.login", side_effect=aiounifi.AiounifiException
     ), pytest.raises(unifi.errors.AuthenticationRequired):