Update example project to run django 5.2 and 6.0

[Swamii]

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[github-actions]

File	Coverage	Lines	Branches		Missing
All files	83%	97%	69%	❌
models.py	75%	100%	50%	❌
test_secrets.py	98%	97%	100%	✅	25
urls.py	75%	100%	50%	❌
utils.py	83%	66%	100%	❌	6-7
drf/admin_api.py	94%	88%	100%	✅	25-26 35 47
drf/separate_api.py	95%	91%	100%	✅	10
drf/test_fencing.py	99%	98%	100%	✅	62 113
src/bananas/__init__.py	66%	83%	50%	❌	19-20
src/bananas/environment.py	66%	97%	35%	❌	217 223 226
src/bananas/models.py	96%	100%	92%	✅
src/bananas/query.py	86%	92%	80%	✅	45-50
src/bananas/url.py	95%	100%	91%	✅
src/bananas/admin/extension.py	87%	100%	75%	✅
src/bananas/admin/i18n.py	91%	83%	100%	✅	10
src/bananas/admin/api/mixins.py	67%	75%	60%	❌	86 94-102 113 129 139-150
src/bananas/admin/api/serializers.py	75%	100%	50%	❌
src/bananas/admin/api/versioning.py	75%	100%	50%	❌
src/bananas/admin/api/views.py	99%	98%	100%	✅	135
src/bananas/admin/api/schemas/base.py	91%	83%	100%	✅	11
src/bananas/admin/api/schemas/yasg.py	88%	95%	80%	✅	93 102 141-142
src/bananas/drf/fencing.py	76%	94%	58%	❌	96-102 139
src/bananas/management/commands/syncpermissions.py	87%	95%	80%	✅	31

Minimum allowed coverage is 85%

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