fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-15809188

Author: snyk-bot

requirements.txt

@@ -4,7 +4,7 @@ botocore==1.29.104
 cachetools==5.2.0
 cffi==1.15.1
 chardet==3.0.4
-cryptography==43.0.1
+cryptography==46.0.6
 decorator==4.4.2
 Django==4.1.13
 django-cors-headers==3.13.0