Update django-jsonfield requirement from <1.3.2 to <1.4.1

Updates the requirements on [django-jsonfield](https://github.com/adamchainz/django-jsonfield) to permit the latest version.
- [Release notes](https://github.com/adamchainz/django-jsonfield/releases)
- [Commits](adamchainz/django-jsonfield@0.7...1.4.0)

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

requirements.txt

@@ -29,7 +29,7 @@ django-allauth==0.40.0
 django-appconf==1.0.3
 django-filter==1.1.0
 django-imagekit==4.0.2
-django-jsonfield<1.3.2
+django-jsonfield<1.4.1
 django-jsonfield-compat<=0.4.4
 django-taggit==0.24.0
 django-mptt==0.9.1