chore(deps): bump django from 4.2.20 to 4.2.21 in /src/backend (#9648)

* chore(deps): bump django from 4.2.20 to 4.2.21 in /src/backend

Bumps [django](https://github.com/django/django) from 4.2.20 to 4.2.21.
- [Commits](https://github.com/django/django/compare/4.2.20...4.2.21)

---
updated-dependencies:
- dependency-name: django
  dependency-version: 4.2.21
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

* fix req

* adjust setuptools to be equal

* ensure same version is used

* add missing constraint

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Matthias Mair <code@mjmair.com>

src/backend/requirements.txt

@@ -390,9 +390,9 @@ deprecated==1.2.18 \
     #   opentelemetry-exporter-otlp-proto-grpc
     #   opentelemetry-exporter-otlp-proto-http
     #   opentelemetry-semantic-conventions
-django==4.2.20 \
-    --hash=sha256:213381b6e4405f5c8703fffc29cd719efdf189dec60c67c04f76272b3dc845b9 \
-    --hash=sha256:92bac5b4432a64532abb73b2ac27203f485e40225d2640a7fbef2b62b876e789
+django==4.2.21 \
+    --hash=sha256:1d658c7bf5d31c7d0cac1cab58bc1f822df89255080fec81909256c30e6180b3 \
+    --hash=sha256:b54ac28d6aa964fc7c2f7335138a54d78980232011e0cd2231d04eed393dcb0d
     # via
     #   -r src/backend/requirements.in
     #   django-allauth
@@ -1578,9 +1578,9 @@ sentry-sdk==2.27.0 \
     # via
     #   -r src/backend/requirements.in
     #   django-q-sentry
-setuptools==80.1.0 \
-    --hash=sha256:2e308396e1d83de287ada2c2fd6e64286008fe6aca5008e0b6a8cb0e2c86eedd \
-    --hash=sha256:ea0e7655c05b74819f82e76e11a85b31779fee7c4969e82f72bab0664e8317e4
+setuptools==80.3.1 \
+    --hash=sha256:31e2c58dbb67c99c289f51c16d899afedae292b978f8051efaf6262d8212f927 \
+    --hash=sha256:ea8e00d7992054c4c592aeb892f6ad51fe1b4d90cc6947cc45c45717c40ec537
     # via
     #   -r src/backend/requirements.in
     #   django-money