Fix: Use consistent action versions and remove unused imports

Co-authored-by: ArtyomVancyan <44609997+ArtyomVancyan@users.noreply.github.com>

Author: Copilot

.github/workflows/check-missing-locales.yml

@@ -12,12 +12,10 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v2
 
       - name: Setup Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: '3.x'
+        uses: actions/setup-python@v3
 
       - name: Check for missing locales
         id: check

scripts/check-missing-locales/__main__.py

@@ -4,14 +4,11 @@
 against locales available in antd-phone-input and mui-phone-input dependencies.
 """
 
-import json
 import os
 import re
-import subprocess
 import sys
 from pathlib import Path
-from typing import Set, List, Dict
-from urllib.request import urlopen
+from typing import Set, Dict
 
 
 def get_existing_locales() -> Set[str]: