fix(ci): add Xcode setup step for iOS build

Author: JoshBashed

.github/workflows/build.yml

@@ -13,6 +13,9 @@ jobs:
     - uses: actions/checkout@v4
       with:
         submodules: recursive
+    - uses: maxim-lobanov/setup-xcode@v1
+      with:
+        xcode-version: latest-stable
     - name: Build iOS
       run: ./ios/build.sh
     - name: Create IPA