Update dependency pytest-cov to v6.1.0

Author: renovate[bot]

requirements.txt

@@ -13,7 +13,7 @@ msgspec==0.19.0
 packaging==24.2
 pluggy==1.5.0
 pytest==8.3.5
-pytest-cov==6.0.0
+pytest-cov==6.1.0
 python-dotenv==1.0.1
 SQLAlchemy==2.0.39
 typing_extensions==4.12.2