cartopy_tools using a deprecated matplotlib feature

[blaylockbk]

This import

from toolbox.cartopy_tools import common_features, pc

produces this error

from mpl_toolkits.axes_grid1.inset_locator import InsetPosition

ImportError: cannot import name 'InsetPosition' from 'mpl_toolkits.axes_grid1.inset_locator' (/usr/local/lib/python3.11/dist-packages/mpl_toolkits/axes_grid1/inset_locator.py)

Because the matplotlib API for this chaged.

See blaylockbk/goes2go#120.

I did fix this in the Herbie version of cartopy_tools