Failure on build of new sheet - no support for Oathbreaker legality

[plagueofgophers]

First time user, attempted to build a spreadsheet and it failed with an invalid enum in legalities:

Reading data from scryfall
Fetched https://api.scryfall.com/bulk-data
Fetched https://api.scryfall.com/sets
Fetched https://api.scryfall.com/migrations
Fetched https://api.scryfall.com/migrations?page=2
Fetched https://data.scryfall.io/default-cards/default-cards-20230316210924.json
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "C:\Python311\Scripts\mtg-ssm.exe\__main__.py", line 7, in <module>
  File "C:\Python311\Lib\site-packages\mtg_ssm\ssm.py", line 290, in main
    oracle = get_oracle(
             ^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\mtg_ssm\ssm.py", line 195, in get_oracle
    scrydata = fetcher.scryfetch()
               ^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\mtg_ssm\scryfall\fetcher.py", line 77, in scryfetch
    cards_data = msgspec.json.decode(
                 ^^^^^^^^^^^^^^^^^^^^
msgspec.ValidationError: Invalid enum value 'oathbreaker' - at `key` in `$[0].legalities`

Apparently a new format was endorsed by WOTC. Seems to be fixed by adding Oathbreaker to models.py

[gwax]

This should be resolved by #45 now and released as version 2.6.2