Update dependency pytest-cov to v6.3.0 (#90)

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

Author: renovate[bot]

requirements-test.txt

@@ -1,7 +1,7 @@
 ruff==0.12.12
 pytest==8.4.2
 pytest-asyncio==1.1.0
-pytest-cov==6.2.1
+pytest-cov==6.3.0
 coverage==7.10.6
 aioresponses
 aioresponses==0.7.8