fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-6913422

requirements.txt

@@ -13,7 +13,7 @@ certifi==2022.9.14; python_version >= '3.6'
 cffi==1.15.1
 charset-normalizer==2.1.1; python_version >= '3.6'
 cloudinary==1.30.0
-cryptography==38.0.1; python_version >= '3.6'
+cryptography==42.0.8; python_version >= '3.6'
 cssselect==1.1.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 defusedxml==0.7.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
 deprecated==1.2.13; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'