* chore: Upgrade Python requirements
* build: Downgrade edx-submissions for now.
The latest version changes a method signature and so code here will need
to be updated before that can land. There is already a PR to pick up
that change https://github.com/openedx/edx-platform/pull/37528 so it
doesn't seem worth it to add the constraint so just downgrade the
package in this PR so we can land the rest of the updates.
---------
Co-authored-by: Feanil Patel <feanil@axim.org>
101e69d78b