Bump cryptography from 38.0.0 to 43.0.1 in /python-rag-chatbot

Bumps [cryptography](https://github.com/pyca/cryptography) from 38.0.0 to 43.0.1.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@38.0.0...43.0.1)

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

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

python-rag-chatbot/requirements.txt

@@ -37,7 +37,7 @@ colorama==0.4.6
 coloredlogs==15.0.1
 comm==0.1.4
 contourpy==1.2.1
-cryptography==38.0.0
+cryptography==43.0.1
 cycler==0.12.1
 dataclasses-json==0.6.1
 debugpy==1.8.0