gdextension: Sync with upstream commit 876b290332ec6f2e6d173d08162a02aa7e6ca46d (4.5-stable)

Author: dsnopek

gdextension/extension_api.json

@@ -3,9 +3,9 @@
 		"version_major": 4,
 		"version_minor": 5,
 		"version_patch": 0,
-		"version_status": "rc2",
+		"version_status": "stable",
 		"version_build": "official",
-		"version_full_name": "Godot Engine v4.5.rc2.official",
+		"version_full_name": "Godot Engine v4.5.stable.official",
 		"precision": "single"
 	},
 	"builtin_class_sizes": [