fix(ml): add missing numpy import in main.py

services/ml/app/main.py

@@ -13,6 +13,7 @@ import json
 from fastapi import FastAPI, HTTPException, status
 from fastapi.middleware.cors import CORSMiddleware
 from pydantic import BaseModel, Field
+import numpy as np
 import pandas as pd
 import joblib
 import mlflow