Bump cryptography from 42.0.6 to 42.0.8 (mosaicml#3391)

Bumps [cryptography](https://github.com/pyca/cryptography) from 42.0.6 to 42.0.8.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@42.0.6...42.0.8)

---
updated-dependencies:
- dependency-name: cryptography
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

setup.py

@@ -139,7 +139,7 @@ def package_files(prefix: str, directory: str, extension: str):
     'GitPython==3.1.43',
     'moto[s3]>=4.0.1,<5',
     'mock-ssh-server==0.9.1',
-    'cryptography==42.0.6',
+    'cryptography==42.0.8',
     'pytest-httpserver>=1.0.4,<1.1',
     'setuptools<=59.5.0',
     'pillow==9.3.0',  # Matches the Pillow version listed in the Dockerfile