ci: update Xcode and iOS simulator versions

- Update Xcode from 15.2/16.1 to 16.4
- Update iOS simulator from 17.2/18.1 to 18.5

Author: OhKanghoon

.github/workflows/ci-sampleapp.yml

@@ -20,13 +20,13 @@ jobs:
 
     env:
       SCHEME: KarrotListKitSampleApp
-      DESTINATION: platform=iOS Simulator,name=iPhone 16,OS=18.1
+      DESTINATION: platform=iOS Simulator,name=iPhone 16,OS=18.5
 
     steps:
       - uses: actions/checkout@v4
 
       - name: Setup Xcode Version
-        run: sudo xcode-select --switch /Applications/Xcode_16.1.0.app
+        run: sudo xcode-select --switch /Applications/Xcode_16.4.app
         shell: bash
 
       - name: Run `build-for-testing`

.github/workflows/ci.yml

@@ -19,13 +19,13 @@ jobs:
 
     env:
       SCHEME: KarrotListKit
-      DESTINATION: platform=iOS Simulator,name=iPhone 15,OS=17.2
+      DESTINATION: platform=iOS Simulator,name=iPhone 15,OS=18.5
 
     steps:
       - uses: actions/checkout@v4
 
       - name: Setup Xcode Version
-        run: sudo xcode-select --switch /Applications/Xcode_15.2.app
+        run: sudo xcode-select --switch /Applications/Xcode_16.4.app
         shell: bash
 
       - name: Run `build-for-testing`