Pin pytest<8 to fix Python 3.11 tests (#619)

* Check if pytest<8.1 could fix

* Update test.txt

requirements/test.txt

@@ -15,7 +15,7 @@ pytest-forked
 pytest-picked
 pytest-cov
 pytest-random-order>=0.5.4
-pytest>=5.4.0
+pytest<8
 python-dateutil>=2.8
 pytz>=2018.7
 bandit