chore: sync workflows, scripts, and configurations from MokoStandards

scripts/maintenance/update_changelog.py

@@ -27,8 +27,10 @@ NOTE: Follows Keep a Changelog format, supports Added/Changed/Deprecated/Removed
 """
 
 import argparse
+import os
 import re
 import sys
+from datetime import datetime
 from pathlib import Path
 from typing import List, Optional