Bump cryptography in /_code-samples/airgapped-wallet/py

Bumps [cryptography](https://github.com/pyca/cryptography) from 43.0.1 to 44.0.1.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@43.0.1...44.0.1)

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

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

Author: dependabot[bot]

_code-samples/airgapped-wallet/py/requirements.txt

@@ -1,4 +1,4 @@
-cryptography==43.0.1
+cryptography==44.0.1
 Pillow==10.3.0
 qrcode==7.2
 xrpl-py>=3.0.0