Run CocoaPods Trunk Publish Job on macOS (#1588)

Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1588

This was previously running on Ubuntu, but just happened to work until the setup job assumed macOS. Run the job on macOS.

Reviewed By: cipolleschi

Differential Revision: D54563775

fbshipit-source-id: 2311029cf9b56527608e9cb000d5c09320607a99

.github/workflows/publish-cocoapods-release.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   publish:
     name: Publish to CocoaPods trunk
-    runs-on: ubuntu-latest
+    runs-on: macos-13
 
     steps:
       - uses: actions/checkout@v3