Update dependency pytest to v8

requirements-test.txt

@@ -2,7 +2,7 @@ mypy==0.761
 flake8==3.7.5
 bandit==1.6.2
 black==18.9b0
-pytest==5.2.0
+pytest==8.3.2
 pytest-cov==2.6.1
 pytest-mock==1.10.0
 pytest-runner==4.2