Install iOS platform

Author: aashishpatil-g

.github/workflows/spm.yml

@@ -71,6 +71,8 @@ jobs:
       run: sudo xcode-select -s /Applications/${{ matrix.xcode }}.app/Contents/Developer
     - name: Setup Scripts Directory
       run: ./setup-scripts.sh
+    - name: Install iOS Platform
+      run: xcodebuild -downloadPlatform iOS
     - name: Initialize xcodebuild
       run: scripts/setup_spm_tests.sh
     - name: Integration Test Setup