Bump django-pagedown from 1.0.6 to 2.0.3

Bumps [django-pagedown](https://github.com/timmyomahony/django-pagedown) from 1.0.6 to 2.0.3.
- [Release notes](https://github.com/timmyomahony/django-pagedown/releases)
- [Commits](https://github.com/timmyomahony/django-pagedown/commits

)

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

requirements.txt

@@ -15,7 +15,7 @@ django-filter==2.1.0
 django-fsm==2.6.1
 django-heroku==0.3.1
 django-hijack==2.1.10
-django-pagedown==1.0.6
+django-pagedown==2.0.3
 django-pwned-passwords==4.1.0
 django-redis==4.11.0
 django-referrer-policy==1.0