build(deps): bump cryptography from 41.0.7 to 42.0.8 in /prometheus

Bumps [cryptography](https://github.com/pyca/cryptography) from 41.0.7 to 42.0.8.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@41.0.7...42.0.8)

---
updated-dependencies:
- dependency-name: cryptography
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]