adapt arch and cpu flags and fix ios build

Author: Ivansete-status

.github/workflows/ci.yml

@@ -128,6 +128,10 @@ jobs:
         with:
           submodules: recursive
 
+      - uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: '16.2'
+
       - uses: jiro4989/setup-nim-action@v2
         with:
           nim-version: '2.2.4'
@@ -136,9 +140,7 @@ jobs:
         run: nimble setup -l
 
       - name: Build libsdsIOS
-        run: |
-          export IOS_SDK_PATH=$(xcrun --show-sdk-path --sdk iphoneos)
-          nimble libsdsIOS
+        run: nimble libsdsIOS
 
       - uses: actions/upload-artifact@v4
         with: