Address pytest-asyncio event_loop deprecation warning

[abrookins]

Problem

The test suite uses a custom event_loop fixture pattern that is deprecated in pytest-asyncio:

DeprecationWarning: The event_loop fixture provided by pytest-asyncio has been redefined in
/tests/conftest.py:20
Replacing the event_loop fixture with a custom implementation is deprecated
and will lead to errors in the future.

Current Status

• Low priority - tests work correctly despite the warning
• Previous attempts to fix this broke Redis async connection handling
• May need addressing when upgrading pytest-asyncio versions

Related

• pytest warnings: pytest-asyncio deprecation and pydantic field shadowing #707 (original issue with analysis)

Notes

This is documented as a known issue. The fix requires careful refactoring of the async test architecture to avoid breaking Redis connection handling.