Why JSON aren't you really JSON with double quotes?

[martbhell]

          This causes a stack trace, also after manually uploading a schedule that should be OK (application/json) ?

  File "/workspace/main.py", line 240, in update_schedule
    changes = diff(json.loads(old_content), json.loads(content))
  File "/layers/google.python.runtime/python/lib/python3.10/json/__init__.py", line 339, in loads
    raise TypeError(f'the JSON object must be str, bytes or bytearray, '
TypeError: the JSON object must be str, bytes or bytearray, not dict

Originally posted by @martbhell in #91 (comment)

Hacked around by adding str().repliace("'", '"') in a few places. Feels like it's related to the json dumps vs loads..