Updates CI system

Fixes #779

.github/workflows/obakittests.yml

@@ -8,20 +8,20 @@ on:
 
 jobs:
   build:
-    runs-on: macos-14
+    runs-on: macos-15-arm64
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
-    - uses: actions/cache@v2
+    - uses: actions/cache@v4
       with:
         path: .build
         key: ${{ runner.os }}-spm-${{ hashFiles('**/Package.resolved') }}
         restore-keys: |
           ${{ runner.os }}-spm-
 
     - name: Switch Xcode 15
-      run: sudo xcode-select -switch /Applications/Xcode_15.4.app
+      run: sudo xcode-select -switch /Applications/Xcode_16.1.app
 
     - name: Install xcodegen
       run: brew install xcodegen
@@ -33,7 +33,7 @@ jobs:
     - name: Build OneBusAway
       run: xcodebuild clean build-for-testing
         -scheme 'App'
-        -destination 'platform=iOS Simulator,name=iPhone 15'
+        -destination 'platform=iOS Simulator,name=iPhone 16'
         -quiet
 
     # Unit Test
@@ -42,7 +42,7 @@ jobs:
         -only-testing:OBAKitTests
         -project 'OBAKit.xcodeproj'
         -scheme 'App'
-        -destination 'platform=iOS Simulator,name=iPhone 15'
+        -destination 'platform=iOS Simulator,name=iPhone 16'
         -resultBundlePath OBAKitTests.xcresult
         -quiet
 

README.markdown

@@ -90,6 +90,12 @@ Now, replace the file `OBAKitCore/Models/Protobuf/gtfs-realtime.proto` with the
 
 You can find the latest version of the GTFS-RT protobuf file in the https://github.com/google/transit/ repository.
 
+### Update macOS/Xcode versions for GitHub Actions CI
+
+1. Find the latest version of macOS and Xcode here: https://github.com/actions/runner-images/tree/main/images/macos
+2. Update the `.github/obakittests.yml` file accordingly.
+3. [There's no step 3](https://www.youtube.com/watch?v=ihOxl1v5BRk).
+
 ### Fix "Missing package product" build errors
 
 In Xcode: File Menu -> Packages -> Reset Package Caches