Update pytest and its plugins to the latest versions

- pytest v8.4.2
- pytest-cov v7.0.0
- pytest-sugar v1.1.1

closes #1022, closes #1016, closes #1029

Author: Nothing4You

requirements-dev.txt

@@ -2,9 +2,9 @@ coverage==7.10.6
 # flake8 version is also specified in .github/workflows/ci-cd.yml
 flake8==5.0.4
 ipdb==0.13.13
-pytest==7.3.2
-pytest-cov==4.1.0
-pytest-sugar==0.9.7
+pytest==8.4.2
+pytest-cov==7.0.0
+pytest-sugar==1.1.1
 PyMySQL==1.1.2
 SQLAlchemy==1.3.24
 uvloop==0.21.0