Fix CI (#19)

* Fix CI

* CI

Author: uc-pedro

.github/workflows/ci.yml

@@ -25,12 +25,16 @@ jobs:
 
   test-ios: 
     needs: test-rn
-    runs-on: macos-latest
+    runs-on: macos-11
     defaults:
       run:
         working-directory: example
 
     steps:
+    - uses: maxim-lobanov/setup-xcode@v1
+      with:
+        xcode-version: '13.0'
+        
     - name: Checkout
       uses: actions/checkout@v2