chore: fix import order in gui.py

src/minimaximage/gui.py

@@ -19,9 +19,9 @@ import subprocess
 import sys
 import threading
 import tkinter as tk
+from collections.abc import Callable
 from pathlib import Path
 from tkinter import filedialog, messagebox, ttk
-from collections.abc import Callable
 from typing import Any
 
 from PIL import Image, ImageTk