Wrong username validation UserInRegister model

First Check

[X] I added a very descriptive title to this issue.
[X] I already read and followed all the tutorial in the docs and didn't find an answer.
[X] I already checked if it is not related to AuthX but to Pydantic.
[X] I already checked if it is not related to AuthX but to FastAPI.

Example Code

from fastapi import FastAPI
from authx import Authentication, MongoDBBackend
from authx.services.auth import AuthService
from authx.core.jwt import JWTBackend
from authx.backend import UsersRepo
import uvicorn

def app():
    app = FastAPI()

    auth = Authentication(
        debug=True,
        base_url="http://localhost:8000",
        site="http://localhost:8000",
        database_backend=MongoDBBackend(database_name="TravelMonk"),
        callbacks=["http://localhost:8000/callback"],
        access_cookie_name="access_token",
        refresh_cookie_name="refresh_token",
        private_key="private.pem",
        public_key="public.pem",
        access_expiration=3600,
        refresh_expiration=86400,
        smtp_username=None,
        smtp_host=None,
        smtp_password=None,
        smtp_tls=False,
        display_name="travelmonk",
        recaptcha_secret=None,
        social_creds=None,
        social_providers=None,
    )

    app.include_router(auth.auth_router, prefix="/api/users")
    return app

if __name__ == "__main__":
    app = app()
    uvicorn.run(app, host="0.0.0.0", port=8000, debug=True)

Description

Call the endpoint /register With the request body as

{
    "email": "johndoe@email.com",
    "username": "johndoe",
    "password1": "password",
    "password2": "password"
}

It should set access_token and return_token

But it returns

{
    "detail": "Username must be only in latin or cyrillic"
}

Operating System

Windows

Operating System Details

No response

FastAPI Version

0.77.1

Python Version

3.9

Additional Context

The problem possibly is in the check_username method in the file authx/models/user.py

def check_username(v: str) -> str:
    v = v.strip()
    if len(v) < USERNAME_MIN_LENGTH or len(v) > USERNAME_MAX_LENGTH:
        raise ValueError("username length")
    for letter in v:
        if letter not in USERNAME_CHARS:
            raise ValueError("username special characters")
    if v in WRONG_USERNAMES:
        raise ValueError("username wrong")
    if any(letter in ascii_letters for letter in v):
        raise ValueError("username different letters")
    return v

The last if clause should be

if any(letter not in ascii_letters for letter in v):
        raise ValueError("username different letters")

yezz123 / authx

Wrong username validation UserInRegister model #237