Update dependency pytest to v9

renovate[bot] · web-flow · commit 220827bcad71 · 2025-11-08T18:11:13.000Z
diff --git a/dev-requirements.txt b/dev-requirements.txt
@@ -4,4 +4,4 @@ black==23.12.1
 ruff==0.11.8
 mypy==1.15.0
 types-requests
-pytest==8.3.5
+pytest==9.0.0
