### Description

The current length limit for the `login` parameter in an HTTP connection is 500 characters. It'd be nice if this was 5000 characters like the `password` parameter.

### Use case/motivation

We've run into an issue with an API we need to integrate with. It uses basic HTTP authentication, and both username and password are about 900 characters long each. We don't have any control over this API, so we cannot change the authentication method, nor the length of these usernames and passwords.

### Related issues

_No response_

### Are you willing to submit a PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

*, session: Session, table_name: str, uniqueness: list[str], version: str
) -> Iterable[str]:
    """
    Check table for duplicates, given a list of columns which define the uniqueness of the table.
    Usage example:
    .. code-block:: python
        def check_task_fail_for_duplicates(session):
            from airflow.models.taskfail import TaskFail
            metadata = reflect_tables([TaskFail], session)
            task_fail = metadata.tables.get(TaskFail.__tablename__)  
            if task_fail is None:  # table not there
                return
            if "run_id" in task_fail.columns:  # upgrade already applied
                return
            yield from check_table_for_duplicates(
                table_name=task_fail.name,
                uniqueness=["dag_id", "task_id", "execution_date"],
                session=session,
                version="2.3",
            )
    :param table_name: table name to check
    :param uniqueness: uniqueness constraint to evaluate against
    :param session:  session of the sqlalchemy
    """