GitHub Actions: Jobs running on `macos-latest` are now running on macOS 12

macOS 12 became generally available on GitHub-hosted runners in June 2022. Over the next 10 weeks, jobs using the macos-latest runner label will migrate from macOS 11 to 12. During migration, you can determine if your job has migrated by viewing the Runner Image information in the Set up job step of your logs.

Start using GitHub Actions to build and publish apps for the Apple ecosystem by updating your jobs to include runs-on: macos-latest

jobs:
  build:
    runs-on: macos-latest
     steps:
      - uses: actions/checkout@v2
      - name: Build
        run: swift build
      - name: Run tests
        run: swift test

The macOS 12 runner image has different tools and tool versions than macOS 11. See the full list of changed software.

If you spot any issues with your workflows when using macOS 12, please let us know by creating an issue in the runner image repository.