Xblock-drag-and-drop-v2

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* Unpin lxml constraint.

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* Add Python 3.11 support.
* Add Python 3.12 support.
* Drop Django 3.2 support.

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* Remove Transifex calls and bundled translation files for the OEP-58 proposal.

BREAKING CHANGE: This version removes translations for Quince and earlier releases.

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* XBlockI18NService js translations support

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* Removed xblock-utils package
* Replace `xblockutils.*` imports with `xblock.utils.*`. The old imports are used as a fallback for compatibility with older releases.
* Removed bok-choy package along with all integration tests.

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* Fix Safari focus when there are no draggables left.