[CI] Try introducing isort. (#3495)

vllm/model_executor/models/deepseek.py

@@ -33,14 +33,14 @@ from vllm.model_executor.layers.fused_moe import fused_moe
 from vllm.model_executor.layers.layernorm import RMSNorm
 from vllm.model_executor.layers.linear import (LinearMethodBase,
                                                MergedColumnParallelLinear,
-                                               ReplicatedLinear,
                                                QKVParallelLinear,
+                                               ReplicatedLinear,
                                                RowParallelLinear)
-from vllm.model_executor.layers.rotary_embedding import get_rope
 from vllm.model_executor.layers.logits_processor import LogitsProcessor
+from vllm.model_executor.layers.rotary_embedding import get_rope
 from vllm.model_executor.layers.sampler import Sampler
 from vllm.model_executor.layers.vocab_parallel_embedding import (
-    VocabParallelEmbedding, ParallelLMHead)
+    ParallelLMHead, VocabParallelEmbedding)
 from vllm.model_executor.parallel_utils.communication_op import (
     tensor_model_parallel_all_reduce)
 from vllm.model_executor.parallel_utils.parallel_state import (