Bump cryptography from 42.0.1 to 42.0.4 in /demo-python/code

Bumps [cryptography](https://github.com/pyca/cryptography) from 42.0.1 to 42.0.4.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@42.0.1...42.0.4)

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

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

Author: dependabot[bot]

demo-python/code/data-chunking/requirements.txt

@@ -20,7 +20,7 @@ colorama==0.4.6
 comm==0.2.1
 confection==0.1.4
 contourpy==1.2.0
-cryptography==42.0.1
+cryptography==42.0.4
 cycler==0.12.1
 cymem==2.0.8
 dataclasses-json==0.6.3