Ignore ruff ICN001 so CI passes with unpinned ruff 0.17

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: tonylampada

pyproject.toml

@@ -29,6 +29,7 @@ ignore = [
     "FIX",
     "FLY",
     "FURB",
+    "ICN001",  # `datetime` should be imported as `dt` (new in ruff 0.17; repo uses `import datetime`)
     "ISC",
     "N",
     "PERF",