Possible deadlock with SQLite backend

[JWCook]

See: #146

^{Originally posted by AIGeneratedUsername January 4, 2023}
0.7.3 version works fine, but when I install 0.8.0, my Pytest tests results in:

======================================================== test session starts =========================================================
platform linux -- Python 3.10.9, pytest-7.2.0, pluggy-1.0.0

[A LIST OF MY TESTS HERE, NOT IMPORTANT]

================================================= 1 passed, 208 deselected in 4.16s ==================================================

In other words, after all tests the session hangs forever.

[simon-liebehenschel]

Thank you. The described problem is fixed on the main branch.

[JWCook]

This is now in the latest patch release.