chore(deps): bump cryptography from 42.0.2 to 42.0.4 in /backend/app

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: indirect
...

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