[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

backend/app/expenses/routes.py

@@ -459,4 +459,4 @@ async def group_expense_analytics(
     except ValueError as e:
         raise HTTPException(status_code=404, detail=str(e))
     except Exception as e:
-        raise HTTPException(status_code=500, detail="Failed to fetch analytics")
+        raise HTTPException(status_code=500, detail="Failed to fetch analytics")