fix: install missing sims in sdk.inappmessaging.yml

#no-changelog

Author: ncooke3

.github/workflows/sdk.inappmessaging.yml

@@ -56,6 +56,13 @@ jobs:
       run: scripts/setup_bundler.sh
     - name: Xcode
       run: sudo xcode-select -s /Applications/${{ matrix.xcode }}.app/Contents/Developer
+    - name: Install simulators in case they are missing.
+      uses: nick-fields/retry@ce71cc2ab81d554ebbe88c79ab5975992d79ba08 # v3
+      with:
+        timeout_minutes: 15
+        max_attempts: 5
+        retry_wait_seconds: 120
+        command: sudo xcodebuild -downloadPlatform ${{ matrix.platform }}
     - name: Prereqs
       run: scripts/install_prereqs.sh InAppMessaging ${{ matrix.platform }} xcodebuild
     - name: Build and test