chore(deps): bump sqlparse from 0.4.4 to 0.5.0 in /backend

Bumps [sqlparse](https://github.com/andialbrecht/sqlparse) from 0.4.4 to 0.5.0.
- [Changelog](https://github.com/andialbrecht/sqlparse/blob/master/CHANGELOG)
- [Commits](andialbrecht/sqlparse@0.4.4...0.5.0)

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

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

backend/requirements.txt

@@ -57,7 +57,7 @@ six==1.16.0
     # via apscheduler
 soupsieve==2.4.1
     # via beautifulsoup4
-sqlparse==0.4.4
+sqlparse==0.5.0
     # via django
 typing-extensions==4.6.2
     # via