astropy not importing in access-med-0.10

[max-anu]

When running the following code we get an error importing astropy.

dt = datetime.datetime(2024, 1, 1, 12, 0, 0)
accessvis.update_earth_datetime(lv, when=dt, blendtex=False, sunlight=True)
lv.display((600,600))```

Astropy isn't installed correctly on conda/access-med-0.10. I don't think any changes need to be made aside from reinstalling/making a new version of the environment. I've had similar issues with conda when reinstalling/updating packages before.

Conda is using astropy 7.0.0, and strangely the environment was built before online astropy 7.0.0 was released. 

You can also test by running `import astropy.time`

[max-anu]

@rbeucher also tried to build a new env here but it failed
ACCESS-NRI/ACCESS-Analysis-Conda#133