Use xcode 15.3

.github/workflows/build-native.yml

@@ -51,9 +51,11 @@ jobs:
         if: startsWith(matrix.build, 'android')
         run: echo "ANDROID_NDK=$ANDROID_NDK_LATEST_HOME" >> $GITHUB_ENV
 
-      - name: Downgrade XCode for MacOS
+      - name: Select XCode for MacOS
         if: matrix.build == 'macos'
-        run: sudo xcode-select -s /Applications/Xcode_14.0.1.app
+        run: |
+          xcodes installed
+          sudo xcodes select 15.3
 
       - name: Build
         if: steps.check-cache.outputs.cache-hit != 'true'

.github/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
     name: Build MacOS
     uses: ./.github/workflows/build-native.yml
     with:
-     runner: macos-latest
+     runner: macos-14
      binary: macos
      build: '["macos"]'
 
@@ -49,7 +49,7 @@ jobs:
     name: Build IOS
     uses: ./.github/workflows/build-native.yml
     with:
-      runner: macos-latest
+      runner: macos-14
       binary: ios
       build: '["ios-device", "ios-simulator", "ios-catalyst"]'
 
@@ -110,7 +110,7 @@ jobs:
     secrets: inherit
     with:
       os: macos
-      runner: macos-latest
+      runner: macos-14
       differentiator: dm${{ github.run_id }}${{ github.run_attempt }}
 
   cleanup-cluster-dart-macos:
@@ -229,7 +229,7 @@ jobs:
     secrets: inherit
     with:
       os: macos
-      runner: macos-13 # workaround to: https://github.com/flutter/flutter/issues/118469 latest is still macos-12 ¯\_(ツ)_/¯
+      runner: macos-14
       differentiator: fm${{ github.run_id }}${{ github.run_attempt }}
 
   cleanup-cluster-flutter-macos:
@@ -279,7 +279,7 @@ jobs:
       differentiator: fi${{ github.run_id }}${{ github.run_attempt }}
 
   flutter-tests-ios:
-    runs-on: macos-latest
+    runs-on: macos-14
     name: Flutter Tests iOS
     timeout-minutes: 45
     needs:
@@ -293,6 +293,11 @@ jobs:
         working-directory: packages/realm/tests
 
     steps:
+      - name: Select XCode for MacOS
+        run: |
+          xcodes installed
+          sudo xcodes select 15.3
+
       - name: Checkout
         uses: actions/checkout@v4
         with: