[godot] Copy extensions file to bin/ in GH workflow

.github/workflows/spine-godot-extension-v4.yml

@@ -242,12 +242,13 @@ jobs:
           echo "branch: $BRANCH"
 
           cd artifacts
-          # Ensure gdextension file is in root
-          cp ../spine-godot/spine_godot_extension.gdextension ./
 
           # Create directories matching the expected structure
           mkdir -p bin/{windows,linux,macos/macos.framework,ios,android,web}
 
+          # Ensure gdextension file is in root
+          cp ../spine-godot/spine_godot_extension.gdextension bin/
+
           # Move artifacts to their correct locations
           mv gdextension-windows-$GODOT_TAG/* bin/windows/
           mv gdextension-linux-x86_64-$GODOT_TAG/* bin/linux/