chore: update Django to 4.2.7 for Quince - Security Patch

[magajh]

Description

This PR updates Django to version 4.2.7 in the Quince release branch. The update includes the latest security patch, as part of the BTR working group's ongoing efforts to ensure the security of Open edX's supported named releases.

For more information, see: openedx/wg-build-test-release#324

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[mphilbrick211]

Hi @magajh! Flagging that there's a failing test here. Would you mind taking a look?

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[mphilbrick211]

Hi @openedx/2u-phoenix! This is ready for review. Thanks!

[DawoudSheraz]

@magajh Were the requirements file changed directly and not updated via make upgrade?

[cmltaWt0]

Tested by a local tutor build and full deploy (launch).
We need it for the quince.1 release. Merging.