Rescue StaleObjectError when bridge status is reset
What does this MR do and why?
Rescue StaleObjectError when bridge status is reset
Ci::Pipeline#reset_source_bridge! is called in several places during pipeline processing, and these calls can happen concurrently. This can cause a StaleObjectError when updating the status of the bridge, particularly for pipelines that have many jobs starting at once.
Errors raised during processing can leave pipelines and their jobs in an inconsistent state, so we now rescue StaleObjectError. When retrying an entire pipeline we surface this error to the user to allow them to retry, however for individual jobs we take no action as this means the bridge has already been updated and processing has continued.
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