chore(deps): bump the dependencies group across 1 directory with 4 updates (#11051)

* chore(deps): bump the dependencies group across 1 directory with 4 updates

Bumps the dependencies group with 3 updates in the /src/backend directory: [django](https://github.com/django/django), [django-markdownify](https://github.com/erwinmatijsen/django-markdownify) and [pypdf](https://github.com/py-pdf/pypdf).


Updates `django` from 5.2.9 to 6.0
- [Commits](https://github.com/django/django/compare/5.2.9...6.0)

Updates `setuptools` from 80.9.0 to 
- [Release notes](https://github.com/pypa/setuptools/releases)
- [Changelog](https://github.com/pypa/setuptools/blob/main/NEWS.rst)
- [Commits](https://github.com/pypa/setuptools/commits)

Updates `django-markdownify` from 0.9.5 to 0.9.6
- [Commits](https://github.com/erwinmatijsen/django-markdownify/compare/0.9.5...0.9.6)

Updates `pypdf` from 6.4.0 to 6.4.1
- [Release notes](https://github.com/py-pdf/pypdf/releases)
- [Changelog](https://github.com/py-pdf/pypdf/blob/main/CHANGELOG.md)
- [Commits](https://github.com/py-pdf/pypdf/compare/6.4.0...6.4.1)

---
updated-dependencies:
- dependency-name: django
  dependency-version: '6.0'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: dependencies
- dependency-name: setuptools
  dependency-version: 
  dependency-type: direct:production
  dependency-group: dependencies
- dependency-name: django-markdownify
  dependency-version: 0.9.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dependencies
- dependency-name: pypdf
  dependency-version: 6.4.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dependencies
...

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

* fix style

* lower django

* Update Django version constraint to <6.0

* fix style

---------

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

@@ -574,9 +574,9 @@ django-maintenance-mode==0.22.0 \
     --hash=sha256:502f04f845d6996e8add321186b3b9236c3702de7cb0ab14952890af6523b9e5 \
     --hash=sha256:a9cf2ba79c9945bd67f98755a6cfd281869d39b3745bbb5d1f571d058657aa85
     # via -r src/backend/requirements.in
-django-markdownify==0.9.5 \
-    --hash=sha256:2c4ae44e386c209453caf5e9ea1b74f64535985d338ad2d5ad5e7089cc94be86 \
-    --hash=sha256:34c34eba4a797282a5c5bd97b13cec84d6a4c0673ad47ce1c1d000d74dd8d4ab
+django-markdownify==0.9.6 \
+    --hash=sha256:9863b2bfa6d159ad1423dc93bf0d6eadc6413776de304049aa9fcfa5edd2ce1c \
+    --hash=sha256:edcf47b2026d55a8439049d35c8b54e11066a4856c4fad1060e139cb3d2eee52
     # via -r src/backend/requirements.in
 django-money==3.5.4 \
     --hash=sha256:25933ed6177f8dc981114db813c7c5d36c7c89bc4017f2b1b2bb0209b5f68876 \
@@ -1475,9 +1475,9 @@ pynacl==1.6.0 \
     --hash=sha256:f46386c24a65383a9081d68e9c2de909b1834ec74ff3013271f1bca9c2d233eb \
     --hash=sha256:f4b3824920e206b4f52abd7de621ea7a44fd3cb5c8daceb7c3612345dfc54f2e
     # via paramiko
-pypdf==6.4.0 \
-    --hash=sha256:4769d471f8ddc3341193ecc5d6560fa44cf8cd0abfabf21af4e195cc0c224072 \
-    --hash=sha256:55ab9837ed97fd7fcc5c131d52fcc2223bc5c6b8a1488bbf7c0e27f1f0023a79
+pypdf==6.4.1 \
+    --hash=sha256:1782ee0766f0b77defc305f1eb2bafe738a2ef6313f3f3d2ee85b4542ba7e535 \
+    --hash=sha256:36eb0b52730fc3077d2b8d4122751e696d46af9ef9e5383db492df1ab0cc4647
     # via -r src/backend/requirements.in
 pyphen==0.17.2 \
     --hash=sha256:3a07fb017cb2341e1d9ff31b8634efb1ae4dc4b130468c7c39dd3d32e7c3affd \