[BUG] pandas string dtype is not recognised by fugue[dask]

[rdmolony]

Hey team,

You're probably aware of this one, raising in case slipped through the cracks ;)

Minimal Code To Reproduce

from fugue.api import fugue_sql
import pandas as pd

example = pd.Series(["i_break_dask"], name="string_column", dtype="string").to_frame()
fugue_sql("SELECT * FROM example", engine="dask")
# /venv/lib/python3.7/site-packages/pyarrow/types.pxi in pyarrow.lib.from_numpy_dtype()
# TypeError: Cannot interpret 'string[python]' as a data type

Describe the bug
pandas string dtype is not recognised by fugue

Expected behavior
string columns are recognised as fugue string or arrow string

Environment (please complete the following information):

• Backend: dask | fugue 0.8.0
• Backend version: 2022.2.0
• Python version: 3.7.12
• OS: linux

I don't think string is yet the default behaviour for pandas string columns, if this ever becomes the case then this might become more of an issue

[goodwanghan]

I investigated, this is a bug. And it will be fixed in triad.

[goodwanghan]

Please upgrade triad to 0.8.1, it should solve this problem. Thanks for reporting.