Bump cryptography from 41.0.6 to 42.0.4 in /docs/sphinx

Bumps [cryptography](https://github.com/pyca/cryptography) from 41.0.6 to 42.0.4.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@41.0.6...42.0.4)

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

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

docs/sphinx/requirements.txt

@@ -26,7 +26,7 @@ charset-normalizer==3.1.0
     # via requests
 click==8.1.3
     # via sphinx-external-toc
-cryptography==41.0.6
+cryptography==42.0.4
     # via pyjwt
 deprecated==1.2.13
     # via pygithub
@@ -84,9 +84,7 @@ pygments==2.15.0
     #   pydata-sphinx-theme
     #   sphinx
 pyjwt[crypto]==2.6.0
-    # via
-    #   pygithub
-    #   pyjwt
+    # via pygithub
 pynacl==1.5.0
     # via pygithub
 pytz==2023.3.post1