Change to io module

cmd/auth/generateToken.go

@@ -3,7 +3,7 @@ package auth
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strings"
 
@@ -91,7 +91,7 @@ func generateToken(
 	}
 	defer resp.Body.Close()
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		fmt.Println("Error reading response:", err)
 		return