MySQL SQLAlchemy 1.4 URL() is constructed incorrectly

_________________________________________________ test_sqlalchemy_mysql_url __________________________________________________

    def test_sqlalchemy_mysql_url():
        with mock.patch.dict(os.environ, {"AUR_CONFIG": "conf/config.defaults"}):
            aurweb.config.rehash()
>           assert db.get_sqlalchemy_url()

test/test_db.py:55:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
aurweb/db.py:21: in get_sqlalchemy_url
    return sqlalchemy.engine.url.URL(
venv/lib/python3.8/site-packages/sqlalchemy/engine/url.py:100: in __new__
    return URL.create(*arg, **kw)
venv/lib/python3.8/site-packages/sqlalchemy/engine/url.py:152: in create
    cls._str_dict(query),
venv/lib/python3.8/site-packages/sqlalchemy/engine/url.py:207: in _str_dict
    {
venv/lib/python3.8/site-packages/sqlalchemy/engine/url.py:208: in <dictcomp>
    _assert_str(key): _assert_value(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

val = True

    def _assert_value(val):
        if isinstance(val, str):
            return val
        elif isinstance(val, collections_abc.Sequence):
            return tuple(_assert_value(elem) for elem in val)
        else:
>           raise TypeError(
                "Query dictionary values must be strings or "
                "sequences of strings"
            )
E           TypeError: Query dictionary values must be strings or sequences of strings

venv/lib/python3.8/site-packages/sqlalchemy/engine/url.py:191: TypeError

SQLAlchemy Version 1.4.12

This is caused due to passing True as the buffered key's value. Removing the buffered key pair completely removes this error, but I am not certain of all of the ramifications of that at this time.

This needs to be looked into and fixed.