chore(deps-dev): bump pytest 8.3.5→9.0.3, black 24.10.0→26.3.1

Closes Dependabot alerts for CVE-2025-71176 (pytest) and CVE-2026-32274 (black).

Author: rosuH

requirements-dev.txt

@@ -1,7 +1,7 @@
-black==24.10.0
+black==26.3.1
 flake8==7.1.1
 mypy==1.13.0
-pytest==8.3.5
+pytest==9.0.3
 pre-commit==4.0.1
 types-requests==2.32.0
 types-tqdm==4.66.0