Update dependency pytest-cov to v6.1.1

Author: renovate[bot]

requirements.txt

@@ -18,7 +18,7 @@ pyflakes==3.3.2
 pylint==3.3.6
 pyright==1.1.398
 pytest==8.3.5
-pytest-cov==6.1.0
+pytest-cov==6.1.1
 tomli==2.2.1
 tomlkit==0.13.2
 typing_extensions==4.13.1