[godot] Use self-hosted label instead of runner name.

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

@@ -115,7 +115,7 @@ jobs:
           path: spine-godot/godot/bin/godot-editor-macos.zip
 
   godot-editor-macos-self-hosted:
-    runs-on: Marios-MacBook-Pro
+    runs-on: self-hosted
     steps:
       - uses: actions/checkout@v3
         with: