Update djangorestframework requirement from ==3.14.* to ==3.15.*

[dependabot[bot]]

Updates the requirements on djangorestframework to permit the latest version.

Release notes

Sourced from djangorestframework's releases.

Version 3.15.1

What's Changed

• Update the message to be consistent with the Django `HttpResponseBa… by @​maycuatroi in encode/django-rest-framework#9287
• Make inflection package truly optional by @​browniebroke in encode/django-rest-framework#9303
• Fix broken links in release notes for 3.15 by @​browniebroke in encode/django-rest-framework#9305
• TokenAdmin.autocomplete_fields Breaks Some Use Cases, Revert by @​alexdlaird in encode/django-rest-framework#9301
• Add drf-sendables to third-party-packages.md by @​amikrop in encode/django-rest-framework#9261
• Revert "feat: Add some changes to ValidationError to support django style vad…" by @​auvipy in encode/django-rest-framework#9326
• Revert "Re-prefetch related objects after updating" by @​auvipy in encode/django-rest-framework#9327
• Revert #8863 by @​tomchristie in encode/django-rest-framework#9330
• Revert #8009 by @​tomchristie in encode/django-rest-framework#9332
• Revert #9030 by @​tomchristie in encode/django-rest-framework#9333
• Revert "Fix NamespaceVersioning ignoring DEFAULT_VERSION on non-None namespaces" by @​auvipy in encode/django-rest-framework#9335
• SearchFilter.get_search_terms returns list. by @​tomchristie in encode/django-rest-framework#9338
• Version 3.15.1 by @​tomchristie in encode/django-rest-framework#9339

New Contributors

• @​maycuatroi made their first contribution in encode/django-rest-framework#9287
• @​alexdlaird made their first contribution in encode/django-rest-framework#9301

Full Changelog: https://github.com/encode/django-rest-framework/compare/3.15.0...3.15.1

Commits

• 3285916 Version 3.15.1 (#9339)
• eb361d2 SearchFilter.get_search_terms returns list. (#9338)
• 400b4c5 Revert "Fix NamespaceVersioning ignoring DEFAULT_VERSION on non-None namespac...
• 4ef3aaf Revert #9030 (#9333)
• 4f10c4e Revert "Fix Respect can_read_model permission in DjangoModelPermissions (#8...
• a4d5807 Revert "feat: Add some changes to ValidationError to support django style vad...
• da78a14 Revert "Re-prefetch related objects after updating (#8043)" (#9327)
• 0e4ed81 Revert "feat: Add some changes to ValidationError to support django style vad...
• 56a5b35 Add drf-sendables to third-party-packages.md (#9261)
• d7c8dcf Revert PR that adds autocomplete_fields to TokenAdmin, as this break some use...
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