fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-13836728
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-13837025

Author: snyk-bot

requirements.txt

@@ -5,6 +5,6 @@ python3-nmap
 mac-vendor-lookup
 getmac~=0.8.2
 chardet==3.0.4
-Django~=3.2.22
+Django~=4.2.26
 aiohttp>=3.9.0 # not directly required, pinned by Snyk to avoid a vulnerability
 sqlparse>=0.5.0 # not directly required, pinned by Snyk to avoid a vulnerability