Update dependency pytest-cov to v6 (#1818)

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

Author: renovate[bot]

poetry.lock

@@ -95,7 +95,7 @@ moto = "^5.0.0"
 nplusone = "^1.0.0"
 pdbpp = "^0.10.3"
 pytest = "^8.0.0"
-pytest-cov = "^5.0.0"
+pytest-cov = "^6.0.0"
 pytest-django = "^4.5.2"
 pytest-env = "^1.0.0"
 pytest-freezegun = "^0.4.2"