json import error in itsdangerous package

There is a version bump in the `itsdangerous` package dependency, that is causing some import issues.  
```
from itsdangerous import json as _json

ImportError: cannot import name 'json' from 'itsdangerous' (/opt/anaconda3/envs/astro/lib/python3.10/site-packages/itsdangerous/__init__.py)
```
Pinning to `itsdangerous==2.0.1` fixes the issue. 