⬆️ Bump django from 5.2.7 to 5.2.8 in /src/backend

[dependabot[bot]]

Bumps django from 5.2.7 to 5.2.8.

Commits

• 47fe39a [5.2.x] Bumped version for 5.2.8 release.
• ac9fcf6 [5.2.x] Refs CVE-2025-64459 -- Avoided propagating invalid arguments to Q on ...
• 6703f36 [5.2.x] Fixed CVE-2025-64459 -- Prevented SQL injections in Q/QuerySet via th...
• 4f5d904 [5.2.x] Fixed CVE-2025-64458 -- Mitigated potential DoS in HttpResponseRedire...
• cbdf128 [5.2.x] Fixed #36704 -- Fixed system check error for proxy model with a compo...
• 6775888 [5.2.x] Fixed #36696 -- Fixed NameError when inspecting functions with deferr...
• d5dfffa [5.2.x] Added stub release notes and release date for 5.2.8, 5.1.14, and 4.2.26.
• 368f955 [5.2.x] Fixed #36681 -- Removed English pluralization bias from example in do...
• 71267c9 [5.2.x] Fixed #35095 -- Clarified Swiss number formatting in docs/topics/i18n...
• 9b37bd5 [5.2.x] Made RemoteTestResultTest.test_pickle_errors_detection() compatible w...
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