build(ci): adds Xcode 13 to matrix

Author: timbru31

.github/workflows/smoke-test-macos.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: macos-latest
     strategy:
       matrix:
-        xcode: [12]
+        xcode: [12, 13]
 
     steps:
       - uses: actions/checkout@v3