DT-1108: Use workload identity for GCR SA in cherry pick action #1874
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Jira ticket: https://broadworkbench.atlassian.net/browse/DT-1108
Addresses
Where possible, we should use workload identity rather than rotating service account keys. We hope to get rid of this action soon, but this was a relatively easy change and a proof of concept for other workload identity work. We also were not rotating the keys for this SA, so it will be safer.
Summary of changes
Merge order
Testing Strategy
Successful test run: https://github.com/DataBiosphere/jade-data-repo/actions/runs/12379744534/job/34554576957