chore: update Django constraint to match latest LTS version

[mariajgrimaldi]

Description:

This PR updates the Django common constraint used by other projects' repositories to use the latest LTS version: https://openedx.atlassian.net/wiki/spaces/AC/pages/3767926815/Django+4.2+Upgrade+Plan

Merge checklist:

• All reviewers approved
• CI build is green
• If adding new checks, followed how_tos/0001-adding-new-checks.rst
• Changelog record added (if needed) NA
• Documentation updated (not only docstrings) (if needed) NA
• Commits are squashed

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[mphilbrick211]

@feanil - is this something Axim should review?

[feanil]

Yea, there are still 2 services that are not running django 4 so we'll need to update the local constraints for those services so we can merge this, I'll reach out to the team that's doing the upgrades for those final 2 services.

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