fix(openai-agents): trailing newline on governance/__init__.py (W292)

The review's W292 nit named __init__.py:39 too; the earlier fix only
covered hooks.py and the test file.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: aditik0303

packages/uipath-openai-agents/src/uipath_openai_agents/governance/__init__.py

@@ -17,4 +17,4 @@
 __all__ = [
     "GovernanceAgentHooks",
     "install_governance",
-]
+]