tom_dataproducts is using a deprecated astropy function

[phycodurus]

When running TOMToolkit with astropy>=6, upon start-up we get:
cannot import name 'update_default_config' from 'astropy.config.configuration'
this is because update_default_config has been removed from astropy6.

The current astropy version is 7.1, and this issues pins us to <6.

[jchate6]

Can you be more specific with the stack trace?

the lock file installs astropy==6.1.7 and I do not see that error.
What does "upon start-up" mean?

I can't find update_default_config anywhere in the codebase...