django.git, branch 4.2.1

[4.2.x] Bumped version for 4.2.1 release.

2023-05-03T11:44:49Z

[4.2.x] Fixed CVE-2023-31047, Fixed #31710 -- Prevented potential bypass of validation when uploading multiple files using one form field.

2023-05-03T11:43:16Z

Thanks Moataz Al-Sharida and nawaik for reports. Co-authored-by: Shai Berger Co-authored-by: nessita <124304+nessita@users.noreply.github.com>

[4.2.x] Fixed #34529, Refs #34525 -- Reduced index operations with Meta.indexes/index_together when optimizing migrations.

2023-05-03T11:09:49Z

This makes squashing migrations an available path for changing Meta.index_together, which is deprecated, to Meta.indexes. Follow up to f81032572107846922745b68d5b7191058fdd5f5. Backport of 8e2460d599aec95f8cfe514d3cc8acdd4ca4b1fb from main.

[4.2.x] Fixed #34530 -- Improved docs when customizing storage for FileField.

2023-05-02T18:50:12Z

Backport of 506f93f0c37ed9c44069edeab8baa66da5f7e03a from main

[4.2.x] Fixed #34515 -- Made LocaleMiddleware prefer language from paths when i18n patterns are used.

2023-05-02T04:33:23Z

Regression in 94e7f471c4edef845a4fe5e3160132997b4cca81. This reverts commit 94e7f471c4edef845a4fe5e3160132997b4cca81 (refs #34069) and partly reverts commit 3b4728310a7a64f8fcc548163b0aa5f98a5c78f5. Thanks Anthony Baillard for the report. Co-Authored-By: Sarah Boyce <42296566+sarahboyce@users.noreply.github.com> Backport of 0e444e84f87d174713a2aef0c4f9704ce2865586 from main

[4.2.x] Refs #34118, Refs #34504 -- Added backward incompatibility note about EmailBackend.ssl_context.

2023-04-28T11:04:39Z

Follow up to 2848e5d0ce5cf3c31fe87525536093b21d570f69. Backport of 5a6d4d3bfde07daab9777545694beb014c832264 from main

[4.2.x] Refs #33662 -- Corrected Sitemap.get_languages_for_item() signature in docs.

2023-04-27T17:54:18Z

Backport of 5c456a879300e5f51010d3f6aa7449302413efed from main

[4.2.x] Doc'd that Count("") is equivalent to COUNT() SQL.

2023-04-27T09:54:26Z

Backport of 23d24f82a7450ef5d369845e18cc0130be5bac6c from main

[4.2.x] Added stub release notes and release date for 4.2.1, 4.1.9, and 3.2.19.

2023-04-26T06:50:20Z

Backport of 18a7f2c711529f8e43c36190a5e2479f13899749 from main

[4.2.x] Fixed #34512 -- Restored breadcrumbs on admin app index view.

2023-04-26T06:37:30Z

Thanks Adam (ataylor32) for the report. Regression in 872b61193b013a700ff88cf50f0eb2cf2c266ff7. Backport of 9440f6ba41e5e96458cd7949fc6d605ef5bd09e9 from main