Bump cryptography from 48.0.1 to 50.0.0 in /user-auth/graphtutorial

Bumps [cryptography](https://github.com/pyca/cryptography) from 48.0.1 to 50.0.0.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@48.0.1...50.0.0)

---
updated-dependencies:
- dependency-name: cryptography
  dependency-version: 50.0.0
  dependency-type: indirect
...

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

Author: dependabot[bot]

user-auth/graphtutorial/requirements.txt

@@ -33,7 +33,7 @@ cffi==2.0.0
     # via cryptography
 charset-normalizer==3.4.3
     # via requests
-cryptography==48.0.1
+cryptography==50.0.0
     # via
     #   azure-identity
     #   msal