fix: catch ValueError instead of bare except in date parsing (#438)

The datetime.strptime() call can only raise ValueError on format
mismatch. Bare except catches KeyboardInterrupt and SystemExit,
which masks real errors.

Co-authored-by: haosenwang1018 <haosenwang1018@users.noreply.github.com>

hindsight-dev/benchmarks/locomo/locomo_benchmark.py

@@ -96,7 +96,7 @@ class LoComoDataset(BenchmarkDataset):
         try:
             dt = datetime.strptime(date_string, "%I:%M %p on %d %B, %Y")
             return dt.replace(tzinfo=timezone.utc)
-        except:
+        except ValueError:
             raise