The GitHub workflow for testing Docker builds on macOS was consistently
failing. This commit downgrades the macOS version used for Docker tests
to `macos-13`, which is the latest Intel-based macOS runner, instead of
the ARM-based `macos-14` which `macos-latest` points to.
This change is necessary because the hypervisor framework required for
Docker is not supported on the ARM-based macOS runners provided by
GitHub. This issue was causing failures when attempting to run Colima
with QEMU using `-accel hvf`, which is unsupported on these runners.
Switching to an Intel-based runner resolves this issue.
Related issues:
- actions/runner-images#9460
- actions/runner-images#9741
- abiosoft/colima#1023
a1922c50c1