godot-plugin does not work with Godot v4.1.1

[icyoda]

Trying to add the plugin to Godot v4.1.1 gives you the following:

res://addons/sketchfab/unzip.gd:29 - Parse Error: Identifier "Directory" not declared in the current scope. Did you mean to use "DirAccess"?
res://addons/sketchfab/unzip.gd:37 - Parse Error: Identifier "Directory" not declared in the current scope. Did you mean to use "DirAccess"?
res://addons/sketchfab/unzip.gd:46 - Parse Error: Identifier "Directory" not declared in the current scope. Did you mean to use "DirAccess"?
res://addons/sketchfab/unzip.gd:52 - Parse Error: Identifier "File" not declared in the current scope.
res://addons/sketchfab/unzip.gd:53 - Parse Error: Identifier "File" not declared in the current scope.
res://addons/sketchfab/unzip.gd:56 - Parse Error: Identifier "File" not declared in the current scope.
res://addons/sketchfab/plugin.gd:1 - Parse Error: Unexpected "Identifier" in class body.