fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-6261585

requirements.txt

@@ -60,7 +60,7 @@ cffi==1.15.1                  --hash=sha512:160432f1765330dab76807ec42052cf41cf3
                               --hash=sha512:e99cafcb029076abc29e435b490fa0573ee2856f4051b7ca8a5b38cd125d56dd9dae8b189f59ceb3d728a675da8ee83239e09e19f8b0feeddea4b186ab5173a5
 
 # cryptography (pyca) (Handles TCB-side X448 key exchange)
-cryptography==40.0.2          --hash=sha512:529d42f80f85f84ddb9c4fc16adfde89c8e0861b37dc1aa85e49760034428d48ea2ece1b41bc6d6e28fbe7e6095357df512533391457aa910539baac02b0aeb3 \
+cryptography==42.0.4          --hash=sha512:529d42f80f85f84ddb9c4fc16adfde89c8e0861b37dc1aa85e49760034428d48ea2ece1b41bc6d6e28fbe7e6095357df512533391457aa910539baac02b0aeb3 \
                               --hash=sha512:a629ad9150a00b35e2188837614f9196439b29837420b383b88399905306911f5d11ac970c3ca79a88c53ae0c98aa34892cfceb7ffdac4b965717f3e6afc9abf \
                               --hash=sha512:28acceb7b52c3d1a916e99d7fa7ac71f8f7c050bf5a7a24b521f021a442e9cf3ae0fb0471cb92d1ea050a5a323d0b8e9172de965bc2f8398bd68f05d64b31294 \
                               --hash=sha512:8366a2dda1421823bc835a128b3cc1b4f5ce769da2cbb8a952a82c4823a38fe9a2086e2c1ea1725fb3691928cf0be74ac713bfdd3bcc4d54ae7200801c1dd9e2 \