Bump django-filer from 3.0.6 to 3.3.1

Bumps [django-filer](https://github.com/django-cms/django-filer) from 3.0.6 to 3.3.1.
- [Release notes](https://github.com/django-cms/django-filer/releases)
- [Changelog](https://github.com/django-cms/django-filer/blob/master/CHANGELOG.rst)
- [Commits](django-cms/django-filer@3.0.6...3.3.1)

---
updated-dependencies:
- dependency-name: django-filer
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

poetry.lock

@@ -10,7 +10,7 @@ python = "^3.10"
 psycopg2-binary = "^2.9.7"
 django-cms = "^3.11.4"
 django-sekizai = "^4.1.0"
-django-filer = "^3.0.6"
+django-filer = "^3.3.1"
 easy-thumbnails = "^2.8.5"
 django-mptt = "^0.14.0"
 djangocms-text-ckeditor = "^5.1.3"