Merge branch 'master' into jgrpp

# Conflicts:
#	.github/workflows/ci-build.yml
#	.github/workflows/release-linux.yml
#	src/aircraft_cmd.cpp
#	src/airport_gui.cpp
#	src/articulated_vehicles.cpp
#	src/build_vehicle_gui.cpp
#	src/company_gui.cpp
#	src/genworld_gui.cpp
#	src/gfx_layout.cpp
#	src/misc_gui.cpp
#	src/newgrf.cpp
#	src/newgrf_config.h
#	src/newgrf_engine.cpp
#	src/news_gui.cpp
#	src/order_gui.cpp
#	src/roadveh_cmd.cpp
#	src/saveload/saveload.h
#	src/saveload/vehicle_sl.cpp
#	src/ship_cmd.cpp
#	src/statusbar_gui.cpp
#	src/table/settings/network_private_settings.ini
#	src/table/settings/network_settings.ini
#	src/toolbar_gui.cpp
#	src/train_cmd.cpp
#	src/vehicle_gui.cpp

README.md

@@ -570,6 +570,9 @@ The implementation of C++17 `std::optional` in `src/3rdparty/optional` is licens
 See `src/3rdparty/optional/LICENSE_1_0.txt` for the complete license text.
 
 
+The icu scriptrun implementation in `src/3rdparty/icu` is licensed under the Unicode license.
+See `src/3rdparty/icu/LICENSE` for the complete license text.
+
 ## 4.0 Credits
 
 See [CREDITS.md](./CREDITS.md)