Truck City : Update notes for v1.2.1

Update notes for v1.2.1

Truck City v1.2.1 has just been released. This is the changelog:

• Improvement: UI scaling is handled better after resolution changes, text is now less blury
• Improvement: added missing translations
• Improvement: added safeguard to prevent very fast shortcut actions on operating systems with fast key press echo
• Improvement: improved the colors of a few tiles
• Improvement: minor VRAM usage improvement
• Bugfix: objectives window can now be closed using its shortcut (F2) on scenario load