fix: backend_app/requirements.macos.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-8456315
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-8456316

backend_app/requirements.macos.txt

@@ -14,7 +14,7 @@ cpe==1.2.1
 cvsslib==0.6.0
 deepdiff==4.2.0
 #Django==3.2.11
-Django==3.1.14
+Django==4.2.17
 django-annoying==0.10.6
 django-celery-beat==2.0.0
 django-celery-results==2.0.0