[godot] Up emscripten version

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

@@ -34,7 +34,7 @@ env:
   AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
   AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
   AWS_EC2_METADATA_DISABLED: true
-  EM_VERSION: 3.1.26
+  EM_VERSION: 3.1.64
   GODOT_TAG: ${{ inputs.godot_tag }}
   GODOT_VERSION: ${{ inputs.godot_version }}
   GODOT_MONO: ${{ inputs.godot_mono }}