Bump sqlparse in /examples/sharedlinks/sharedlinks-backend

Bumps [sqlparse](https://github.com/andialbrecht/sqlparse) from 0.4.2 to 0.4.4.
- [Release notes](https://github.com/andialbrecht/sqlparse/releases)
- [Changelog](https://github.com/andialbrecht/sqlparse/blob/master/CHANGELOG)
- [Commits](andialbrecht/sqlparse@0.4.2...0.4.4)

---
updated-dependencies:
- dependency-name: sqlparse
  dependency-type: indirect
...

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

examples/sharedlinks/sharedlinks-backend/requirements.txt

@@ -49,7 +49,7 @@ requests==2.25.1
     # via coreapi
 simplejson==3.17.2
     # via django-rest-swagger
-sqlparse==0.4.2
+sqlparse==0.4.4
     # via django
 uritemplate==3.0.1
     # via coreapi