Update macOS and iOS CI to use latest devices/OS versions

Author: hamchapman

.github/workflows/test.yml

@@ -21,10 +21,10 @@ jobs:
 
   macos:
     name: macOS & iOS (Xcode)
-    runs-on: macos-11
+    runs-on: macos-latest
     steps:
     - uses: actions/checkout@v1
     - name: Test macOS
       run: xcodebuild test -scheme SwiftCBOR -destination 'platform=OS X,arch=x86_64'
     - name: Test iOS
-      run: xcodebuild test -scheme SwiftCBOR -destination 'platform=iOS Simulator,name=iPhone 13 Pro,OS=latest'
+      run: xcodebuild test -scheme SwiftCBOR -destination 'platform=iOS Simulator,name=iPhone 16 Pro,OS=latest'