Replace get_event_loop with single methods in conftest

[vittoriozamboni]

Removes the warning in Python 3.10 caused by get_event_loop when a current loop is not present. See also this discussion

After the patch, no warning is raised and all tests pass.

[codecov]

Codecov Report

Merging #4 (bd17247) into main (9ca6d87) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main       #4   +/-   ##
=======================================
  Coverage   64.35%   64.35%           
=======================================
  Files           2        2           
  Lines         101      101           
=======================================
  Hits           65       65           
  Misses         36       36           

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[frankie567]

Yes, that's something I gradually update in my projects :) Thank you for catching it!