Update dependency coveralls to v4

Author: renovate[bot]

pyproject.toml

@@ -27,7 +27,7 @@ pytest = "^8.0.0"
 types-markdown = "^3.4.2.1"
 types-pyyaml = "^6.0.12.2"
 pytest-cov = "^5.0.0"
-coveralls = "^3.3.1"
+coveralls = "^4.0.0"
 
 [build-system]
 requires = ["poetry-core"]