Two notable changes:
* the macOS platform has switched from x86_64 to aarch64
* if a new pipeline starts before a previous one finishes,
jobs marked 'interruptible: true' will be auto-cancelled
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
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