redis-om 1.0.0b0: python 3.8 is still supported in pyproject.toml but typing fails

[woutdenolf]

pip install "redis-om==1.0.0b0"
python -c "import redis_om"

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/denolf/.local/wdnbashutils/virtualenvs/pybox_zLA1zn/lib/python3.8/site-packages/redis_om/__init__.py", line 4, in <module>
    from .model.migrations.migrator import MigrationError, Migrator
  File "/home/denolf/.local/wdnbashutils/virtualenvs/pybox_zLA1zn/lib/python3.8/site-packages/redis_om/model/__init__.py", line 2, in <module>
    from .model import (
  File "/home/denolf/.local/wdnbashutils/virtualenvs/pybox_zLA1zn/lib/python3.8/site-packages/redis_om/model/model.py", line 1841, in <module>
    class JsonModel(RedisModel, abc.ABC):
  File "/home/denolf/.local/wdnbashutils/virtualenvs/pybox_zLA1zn/lib/python3.8/site-packages/redis_om/model/model.py", line 1968, in JsonModel
    typ: Union[type[RedisModel], Any],
TypeError: 'type' object is not subscriptable

It works fine with pip install "redis-om==0.3.5"

[woutdenolf]

@sethbuff I think you introduced this in #691.

Instead of type[RedisModel] you probably meant Type[RedisModel]? Or alternatively drop python 3.8 support.