Upgrade cryptography v46.0.7 -> v49.0.0

[acroca]

Fix security alert: https://github.com/dapr/python-sdk/security/dependabot/56

Removed pyOpenSSL as a dependency, and used cryptograpy 49.0.0 directly for the small usecase we had for pyOpenSSL.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.08%. Comparing base (bffb749) to head (a475a7e).
⚠️ Report is 163 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1111      +/-   ##
==========================================
- Coverage   86.63%   82.08%   -4.55%     
==========================================
  Files          84      116      +32     
  Lines        4473     9578    +5105     
==========================================
+ Hits         3875     7862    +3987     
- Misses        598     1716    +1118     

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[Copilot]

Pull request overview

This PR updates the dev/test dependency set to address a Dependabot security alert by upgrading cryptography and removing pyOpenSSL, switching the unit-test certificate generation code to use cryptography directly.

Changes:

• Upgraded cryptography in the lockfile and removed pyOpenSSL from the resolved dependency graph.
• Replaced pyOpenSSL-based certificate generation in tests with cryptography.x509 + cryptography.hazmat.
• Updated pyproject.toml dev dependency list to remove pyOpenSSL and require cryptography.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
uv.lock	Updates resolved cryptography to 49.0.0 and removes pyopenssl from dev/test resolution.
tests/clients/certs.py	Migrates self-signed cert/key generation from pyOpenSSL to cryptography.
pyproject.toml	Removes pyOpenSSL from dev deps and updates the cryptography constraint.

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