godot-upgrade: 4.0 RC 2 -> RC 3

[f8122dac91]

Changelog:

• current: https://godotengine.org/article/release-candidate-godot-4-0-rc-2/
• next: https://godotengine.org/article/release-candidate-godot-4-0-rc-3/

Notable changes:

• 2D: Fix tile atlas merging crash (GH-73634).
• Core: Restore FileAccess.close() method (GH-73435).
• Core: Make ResourceCache.get_cached_resources() thread-safe (GH-73616).
• Editor: Fix corrupt undo after making sub-resources unique (GH-73237).
• Export: Fix missing directories when exporting from command line (GH-73595).
  • This should fix issues exporting Godot projects on CI without the .godot folder of imported assets. Please test and report any remaining issues.
• GDScript: Use path instead of file name when updating script classes, fixes issues with custom resources in export variables (GH-71850).
• GDScript: Fix error about enum typed arrays (GH-72925).
• GDScript: Fix default value of exported enum variable (GH-73292).
• GDScript: Fix unset getter return types resulting in strange behavior (GH-73398).
• GDScript: Rework type check with is (GH-73489).
  • This change involves a slight compatibility breakage for the behavior of the is operator. It now requires a type known as compile time, so it’s not possible to use it to check if two variables have the same type. For this, use typeof() or the new is_instance_of() function.
• GDScript: Make global scope enums accessible as types (GH-73590).
• iOS: Fix memory leak on touch input (GH-69201).
• Web: Fix Standard Gamepad Mapping triggers (GH-73254).

CI Docker Image:

• f8122dac91/godot-4.0-ci-exporter:rc3