Update dependency pytest to ^8.4.2

Author: renovate[bot]

poetry.lock

@@ -52,7 +52,7 @@ black = ">=25.1.0"  # major and minor aren't semantically versioned but on year
 pre-commit = "^4.2.0"
 
 [tool.poetry.group.tests.dependencies]
-pytest = "^8.3.5"
+pytest = "^8.4.2"
 pytest-cov = "^6.1.1"
 pillow = "^11.2.1"