Bump cryptography from 38.0.4 to 50.0.0

Bumps [cryptography](https://github.com/pyca/cryptography) from 38.0.4 to 50.0.0.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@38.0.4...50.0.0)

---
updated-dependencies:
- dependency-name: cryptography
  dependency-version: 50.0.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pyproject.toml

@@ -36,7 +36,7 @@ deepagents = [
     "temporalio[langsmith]>=1.31.0 ; python_version >= '3.11'",
 ]
 dsl = ["pyyaml>=6.0.1,<7", "types-pyyaml>=6.0.12,<7", "dacite>=1.8.1,<2"]
-encryption = ["cryptography>=38.0.1,<39", "aiohttp>=3.13.3,<4"]
+encryption = ["cryptography>=50.0.0,<51", "aiohttp>=3.13.3,<4"]
 external-storage = [
     "aioboto3>=15.1.0,<15.2",
     "aiohttp>=3.13.3,<4",