Bump django-leaflet from 0.24.0 to 0.25.0

Bumps [django-leaflet](https://github.com/makinacorpus/django-leaflet) from 0.24.0 to 0.25.0.
- [Release notes](https://github.com/makinacorpus/django-leaflet/releases)
- [Changelog](https://github.com/makinacorpus/django-leaflet/blob/master/CHANGES)
- [Commits](makinacorpus/django-leaflet@0.24.0...0.25.0)

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

requirements.txt

@@ -65,7 +65,7 @@ django-forms-bootstrap<=3.1.0
 django-activity-stream==0.8.0
 django-autocomplete-light==2.3.3 # pinned because >=2.3.4 throw an exception on startup
 django-basic-authentication-decorator==0.9
-django-leaflet==0.24.0
+django-leaflet==0.25.0
 django-invitations<=1.9.2
 django-recaptcha==2.0.5
 geonode-oauth-toolkit==1.1.4.6