Bump cryptography from 42.0.2 to 42.0.4 in /python

Bumps [cryptography](https://github.com/pyca/cryptography) from 42.0.2 to 42.0.4.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@42.0.2...42.0.4)

---
updated-dependencies:
- dependency-name: cryptography
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

python/requirements.txt

@@ -18,7 +18,7 @@ cffi==1.15.1
     # via cryptography
 charset-normalizer==3.3.2
     # via requests
-cryptography==42.0.2
+cryptography==42.0.4
     # via nitor-vault (setup.py)
 future==0.18.3
     # via nitor-vault (setup.py)