Bump the all-deps group in /requirements with 7 updates

Bumps the all-deps group in /requirements with 7 updates:

| Package | From | To |
| --- | --- | --- |
| [sphinx](https://github.com/sphinx-doc/sphinx) | `8.1.3` | `9.1.0` |
| [sphinx-rtd-theme](https://github.com/readthedocs/sphinx_rtd_theme) | `3.0.2` | `3.1.0` |
| [django-filter](https://github.com/carltongibson/django-filter) | `25.1` | `25.2` |
| [django-polymorphic](https://github.com/jazzband/django-polymorphic) | `4.10.5` | `4.11.1` |
| [faker](https://github.com/joke2k/faker) | `40.1.2` | `40.5.1` |
| [pytest-django](https://github.com/pytest-dev/pytest-django) | `4.11.1` | `4.12.0` |
| [isort](https://github.com/PyCQA/isort) | `7.0.0` | `8.0.1` |


Updates `sphinx` from 8.1.3 to 9.1.0
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v8.1.3...v9.1.0)

Updates `sphinx-rtd-theme` from 3.0.2 to 3.1.0
- [Changelog](https://github.com/readthedocs/sphinx_rtd_theme/blob/master/docs/changelog.rst)
- [Commits](readthedocs/sphinx_rtd_theme@3.0.2...3.1.0)

Updates `django-filter` from 25.1 to 25.2
- [Release notes](https://github.com/carltongibson/django-filter/releases)
- [Changelog](https://github.com/carltongibson/django-filter/blob/main/CHANGES.rst)
- [Commits](carltongibson/django-filter@25.1...25.2)

Updates `django-polymorphic` from 4.10.5 to 4.11.1
- [Release notes](https://github.com/jazzband/django-polymorphic/releases)
- [Commits](jazzband/django-polymorphic@v4.10.5...v4.11.1)

Updates `faker` from 40.1.2 to 40.5.1
- [Release notes](https://github.com/joke2k/faker/releases)
- [Changelog](https://github.com/joke2k/faker/blob/master/CHANGELOG.md)
- [Commits](joke2k/faker@v40.1.2...v40.5.1)

Updates `pytest-django` from 4.11.1 to 4.12.0
- [Release notes](https://github.com/pytest-dev/pytest-django/releases)
- [Changelog](https://github.com/pytest-dev/pytest-django/blob/main/docs/changelog.rst)
- [Commits](pytest-dev/pytest-django@v4.11.1...v4.12.0)

Updates `isort` from 7.0.0 to 8.0.1
- [Release notes](https://github.com/PyCQA/isort/releases)
- [Changelog](https://github.com/PyCQA/isort/blob/main/CHANGELOG.md)
- [Commits](PyCQA/isort@7.0.0...8.0.1)

---
updated-dependencies:
- dependency-name: sphinx
  dependency-version: 9.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-deps
- dependency-name: sphinx-rtd-theme
  dependency-version: 3.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-deps
- dependency-name: django-filter
  dependency-version: '25.2'
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-deps
- dependency-name: django-polymorphic
  dependency-version: 4.11.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-deps
- dependency-name: faker
  dependency-version: 40.5.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-deps
- dependency-name: pytest-django
  dependency-version: 4.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-deps
- dependency-name: isort
  dependency-version: 8.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-deps
...

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

Author: dependabot[bot]

requirements/requirements-codestyle.txt

@@ -2,4 +2,4 @@ black==26.1.0
 flake8==7.3.0
 flake8-bugbear==25.11.29
 flake8-isort==7.0.0
-isort==7.0.0
+isort==8.0.1

requirements/requirements-documentation.txt

@@ -1,3 +1,3 @@
 recommonmark==0.7.1
-Sphinx==8.1.3
-sphinx_rtd_theme==3.0.2
+Sphinx==9.1.0
+sphinx_rtd_theme==3.1.0

requirements/requirements-optionals.txt

@@ -1,2 +1,2 @@
-django-filter==25.1
-django-polymorphic==4.10.5
+django-filter==25.2
+django-polymorphic==4.11.1

requirements/requirements-testing.txt

@@ -1,7 +1,7 @@
 factory-boy==3.3.3
-Faker==40.1.2
+Faker==40.5.1
 pytest==9.0.2
 pytest-cov==7.0.0
-pytest-django==4.11.1
+pytest-django==4.12.0
 pytest-factoryboy==2.8.1
 syrupy==5.1.0