chore(curriculum): fix + test curriculum order (#44366)

* chore(tools): test curriculum order

* chore: update orders

* fix(tests): temporarily ignore cert super

The Relational Databases cert being 'upcomingChanges' is breaking
the tests.

* fix: graphql query here

* fix: use only one meta

* chore: remove unnecessary superOrders

* chore: zero-based indexing

* fix: update mock

* refactor: remove unused fixture

Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>

curriculum/challenges/_meta/machine-learning-with-python-projects/meta.json

@@ -2,10 +2,10 @@
   "name": "Machine Learning with Python Projects",
   "isUpcomingChange": false,
   "dashedName": "machine-learning-with-python-projects",
-  "order": 3,
+  "order": 2,
   "time": "150 hours",
   "superBlock": "machine-learning-with-python",
-  "superOrder": 11,
+  "superOrder": 10,
   "challengeOrder": [
     [
       "5e46f8d6ac417301a38fb92d",