ci: fix ios builds requires xcode 15 (#2279)

Author: xsahil03x

.github/workflows/distribute_external.yml

@@ -91,7 +91,8 @@ jobs:
   ios:
     needs: determine_platforms
     if: ${{ needs.determine_platforms.outputs.run_ios == 'true' }}
-    runs-on: macos-15 # Testflight requires macOS 15 or later
+    runs-on: macos-15 # Requires xcode 15 or later
+
     steps:
       - name: Connect Bot
         uses: webfactory/ssh-agent@v0.9.1

.github/workflows/distribute_internal.yml

@@ -99,7 +99,7 @@ jobs:
   ios:
     needs: determine_platforms
     if: ${{ needs.determine_platforms.outputs.run_ios == 'true' }}
-    runs-on: macos-latest
+    runs-on: macos-15 # Requires xcode 15 or later
     timeout-minutes: 30
     steps:
       - name: Connect Bot

.github/workflows/stream_flutter_workflow.yml

@@ -153,7 +153,7 @@ jobs:
             working-directory: sample_app/android
             build-command: bundle exec fastlane build_apk
           - platform: ios
-            os: macos-latest
+            os: macos-15 # Requires xcode 15 or later
             working-directory: sample_app/ios
             build-command: bundle exec fastlane build_ipa no_codesign:true