chore(deps): update dependency pytest-cov to v4 (#42)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

requirements-test.txt

@@ -2,5 +2,5 @@
 coverage==7.4.1
 packaging==23.2
 pytest==6.2.5
-pytest-cov==3.0.0
+pytest-cov==4.1.0
 pytest-pythonpath==0.7.4