Apply ruff

package/samplers/hebo/sampler.py

@@ -3,15 +3,15 @@
 from typing import Optional
 from typing import Sequence
 
+import numpy as np
 from optuna.distributions import BaseDistribution
 from optuna.distributions import CategoricalDistribution
 from optuna.distributions import FloatDistribution
 from optuna.distributions import IntDistribution
 from optuna.study import Study
-from optuna.trial import FrozenTrial, TrialState
+from optuna.trial import FrozenTrial
+from optuna.trial import TrialState
 import optunahub
-
-import numpy as np
 import pandas as pd
 
 from hebo.design_space.design_space import DesignSpace