Update dependency pytest-cov to v6 (#123)

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

Author: renovate[bot]

poetry.lock

@@ -73,7 +73,7 @@ pattern = "((?P<epoch>\\d+)!)?(?P<base>\\d+(\\.\\d+)*)"
 
 [tool.poetry.group.test.dependencies]
 pytest = "^8.0.0"
-pytest-cov = "^5.0.0"
+pytest-cov = "^6.0.0"
 
 [tool.poetry-dynamic-versioning.substitution]
 files = ["VERSION"]