Revert "Remove unnecessary pytest-asyncio"

This reverts commit a5971e9.

Author: febus982

pyproject.toml

@@ -52,6 +52,7 @@ mike = ">=2.0.0"
 mypy = ">=0.990"
 pymdown-extensions = ">=10.0.1"
 pytest = ">=7.2.0"
+pytest-asyncio = ">=0.20.3"
 pytest-cov = ">=4.0.0"
 pytest-factoryboy = ">=2.5.0"
 pytest-xdist = ">=3.0.2"