Modify test case due to the update of MilvusException (#20192)

Signed-off-by: Nnico <cheng.yuan@zilliz.com>
Signed-off-by: Nnico <cheng.yuan@zilliz.com>

tests/python_client/testcases/test_insert.py

@@ -913,7 +913,7 @@ class TestInsertAsync(TestcaseBase):
         """
         collection_w = self.init_collection_wrap(name=cf.gen_unique_str(prefix))
         df = cf.gen_default_dataframe_data()
-        err_msg = "partitionID of partitionName:p can not be find"
+        err_msg = "partition is not exist: p"
         future, _ = collection_w.insert(data=df, partition_name="p", _async=True)
         future.done()
         with pytest.raises(MilvusException, match=err_msg):