gdextension: Sync with upstream commit 4c311cbee68c0b66ff8ebb8b0defdd9979dd2a41 (4.4-stable)

Author: dsnopek

gdextension/extension_api.json

@@ -3,9 +3,9 @@
 "version_major": 4,
 "version_minor": 4,
 "version_patch": 0,
-"version_status": "rc3",
+"version_status": "stable",
 "version_build": "official",
-"version_full_name": "Godot Engine v4.4.rc3.official"
+"version_full_name": "Godot Engine v4.4.stable.official"
 },
 "builtin_class_sizes": [
 {