Pass authorize_url arguments by keyword

prawcore is making authorize_url's parameters keyword-only; pass them by
name so the call keeps working.

Author: bboe

praw/models/auth.py

@@ -131,11 +131,11 @@ def url(
             raise MissingRequiredAttributeException(msg)
         if isinstance(authenticator, UntrustedAuthenticator):
             return authenticator.authorize_url(
-                "temporary" if implicit else duration,
-                scopes,
-                state,
+                duration="temporary" if implicit else duration,
                 implicit=implicit,
+                scopes=scopes,
+                state=state,
             )
         if implicit:
             raise InvalidImplicitAuth
-        return authenticator.authorize_url(duration, scopes, state)
+        return authenticator.authorize_url(duration=duration, scopes=scopes, state=state)