chore(deps): bump django from 2.2.22 to 2.2.24 in /cad_server

Bumps [django](https://github.com/django/django) from 2.2.22 to 2.2.24.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@2.2.22...2.2.24)

---
updated-dependencies:
- dependency-name: django
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

cad_server/requirements.txt

@@ -1,4 +1,4 @@
-Django==2.2.22
+Django==2.2.24
 djangorestframework==3.11.2
 pymysql==0.9.3
 requests==2.22.0