fix: use collections.abc.Callable for Python 3.10+

- Fix UP035: import Callable from collections.abc
- Fix ruff config: move select to lint.select section

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: NellInc

creed_guardian/guardian.py

@@ -9,7 +9,8 @@
 import logging
 import re
 import time
-from typing import Callable, TypeVar
+from collections.abc import Callable
+from typing import TypeVar
 from urllib.parse import urlparse
 
 import httpx

pyproject.toml

@@ -59,6 +59,8 @@ target-version = ["py310", "py311", "py312"]
 [tool.ruff]
 line-length = 88
 target-version = "py310"
+
+[tool.ruff.lint]
 select = ["E", "F", "I", "N", "W", "UP"]
 
 [tool.mypy]