animdl: vendor Python deps

[timsutton]

• Have you followed the guidelines for contributing?
• Have you ensured that your commits follow the commit style guide?
• Have you checked that there aren't other open pull requests for the same formula update/change?
• Have you built your formula locally with HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
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Follow-on from #162599, this project needed newer lxml and yarl dependency updates. Left a breadcrumb over at justfoolingaround/animdl#301. I left in a patch as a way to true up the dependency changes in one place, but the patch isn't strictly needed in order for it to build, so am fine if it's preferable to take it out and just put in comments at the top of resource blocks.

[p-linnane]

This is awesome, great work! I forgot to circle back to this after we figured out what we were keeping, so thanks for that as well 😅

[github-actions]

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