chore: Adds sandbox requirements to ulmo

[farhaanbukhsh]

Requriement freeze for ulmo branch

Testing instructions:

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[openedx-webhooks]

Thanks for the pull request, @farhaanbukhsh!

This repository is currently maintained by @openedx/wg-maintenance-edx-platform.

Once you've gone through the following steps feel free to tag them in a comment and let them know that your changes are ready for engineering review.

🔘 Get product approval

If you haven't already, check this list to see if your contribution needs to go through the product review process.

• If it does, you'll need to submit a product proposal for your contribution, and have it reviewed by the Product Working Group.
  • This process (including the steps you'll need to take) is documented here.
• If it doesn't, simply proceed with the next step.

🔘 Provide context

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• Dependencies

  This PR must be merged before / after / at the same time as ...

• Blockers

  This PR is waiting for OEP-1234 to be accepted.

• Timeline information

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• Partner information

  This is for a course on edx.org.

• Supporting documentation
• Relevant Open edX discussion forum threads

🔘 Get a green build

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[farhaanbukhsh]

@feanil can you please approve this as well.

[kdmccormick]

can you include the changelog additions from 810ea30 too ?

[farhaanbukhsh]

@kdmccormick included, please approve the PR once you have a look and everything is looking fine.

[kdmccormick]

(rebasing in hopes that it fixes the consistent dependencies check)