Bump django from 1.11.24 to 1.11.25

Bumps [django](https://github.com/django/django) from 1.11.24 to 1.11.25.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@1.11.24...1.11.25)

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

requirements.txt

@@ -3,7 +3,7 @@ Pillow==6.1.0
 lxml==4.4.1
 defusedxml==0.6.0
 psycopg2==2.8.3
-Django==1.11.24
+Django==1.11.25
 
 # Other
 amqp==2.5.2