fix: iOS swift compile error

.github/workflows/workflow.yml

@@ -53,8 +53,14 @@ jobs:
 
   build_ios:
     name: Build iOS App
-    runs-on: macOS-latest
+    runs-on: macos-13
     steps:
+      # Ensure the xcode version is available
+      - name: List Xcode installations
+        run: sudo ls -1 /Applications | grep "Xcode"
+      # Select your required version
+      - name: Select Xcode 15.0
+        run: sudo xcode-select -s /Applications/Xcode_15.0.app/Contents/Developer
       - name: Checkout code
         uses: actions/checkout@v2
       - name: Decrypt iOS keys