ci(testflight): Upgrade to macos-15 and Xcode 16.2 (#4601)

Author: krystofwoldrich

.github/workflows/testflight.yml

@@ -14,12 +14,12 @@ jobs:
 
   upload_to_testflight:
     name: Build and Upload React Native Sample to Testflight
-    runs-on: macos-14
+    runs-on: macos-15
     needs: [diff_check]
     if: ${{ needs.diff_check.outputs.skip_ci != 'true' }}
     steps:
       - uses: actions/checkout@v4
-      - run: sudo xcode-select -s /Applications/Xcode_15.3.app/Contents/Developer
+      - run: sudo xcode-select -s /Applications/Xcode_16.2.app/Contents/Developer
       - uses: ruby/setup-ruby@v1
         with:
           working-directory: samples/react-native