Bump cryptography from 41.0.3 to 41.0.4 in /lib/webssh

Bumps [cryptography](https://github.com/pyca/cryptography) from 41.0.3 to 41.0.4.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@41.0.3...41.0.4)

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

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

lib/webssh/requirements.txt

@@ -1,7 +1,7 @@
 bcrypt==3.2.2
 cffi==1.15.1
 click==8.1.2
-cryptography==41.0.3
+cryptography==41.0.4
 paramiko==2.11.0
 pycparser==2.21
 PyNaCl==1.5.0