[CI] Fix mypy CI (#443)

### What this PR does / why we need it?
Fix CI by updating mypy and pining numpy version

_the modification of model_runner_v1 is just to make CI happy_

### Does this PR introduce _any_ user-facing change?
N/A

### How was this patch tested?
CI passed

Signed-off-by: MengqingCao <cmq0113@163.com>

vllm_ascend/worker/model_runner_v1.py

@@ -21,6 +21,7 @@ import gc
 from typing import TYPE_CHECKING, Dict, List, Optional, Union
 
 import numpy as np
+import numpy.typing as npt
 import torch
 import torch.distributed
 import torch.nn as nn
@@ -171,10 +172,9 @@ class NPUModelRunner:
             device=self.device)
 
         # OPTIMIZATION: Cache the tensors rather than creating them every step.
-        self.arange_np = np.arange(max(self.max_num_reqs + 1,
-                                       self.max_model_len,
-                                       self.max_num_tokens),
-                                   dtype=np.int32)
+        self.arange_np: npt.NDArray[np.int32] = np.arange(max(
+            self.max_num_reqs + 1, self.max_model_len, self.max_num_tokens),
+                                                          dtype=np.int32)
         # NOTE(woosuk): These tensors are "stateless", i.e., they are literally
         # a faster version of creating a new tensor every time. Thus, we should
         # not make any assumptions about the values in these tensors.