Fix import formatting and sorting

Ruff formatting fixes for import organization.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

backend/app/routers/jails.py

@@ -30,11 +30,6 @@ from app.dependencies import (
     GeoCacheDep,
     HttpSessionDep,
 )
-from app.exceptions import (
-    Fail2BanConnectionError,
-    JailNotFoundError,
-    JailOperationError,
-)
 from app.models.ban import JailBannedIpsResponse
 from app.models.jail import (
     IgnoreIpRequest,