fix(testing) retention for image-builds-with-cache artifacts (#12735) #4221

Job	Run time
build / image-build-with-cache (persistenceagent, backend/Dockerfile.persistenceagent, .)	1m 51s
build / image-build-with-cache (apiserver, backend/Dockerfile, .)	3m 58s
build / image-build-with-cache (launcher, backend/Dockerfile.launcher, .)	2m 15s
build / image-build-with-cache (frontend, frontend/Dockerfile, .)	4m 1s
build / image-build-with-cache (scheduledworkflow, backend/Dockerfile.scheduledworkflow, .)	2m 0s
build / image-build-with-cache (metadata-writer, backend/metadata_writer/Dockerfile, .)	52s
build / image-build-with-cache (visualization-server, backend/Dockerfile.visualization, .)	3m 38s
build / image-build-with-cache (viewer-crd-controller, backend/Dockerfile.viewercontroller, .)	1m 50s
build / image-build-with-cache (cache-deployer, backend/src/cache/deployer/Dockerfile, .)	1m 24s
build / image-build-with-cache (cache-server, backend/Dockerfile.cacheserver, .)	2m 50s
build / image-build-with-cache (driver, backend/Dockerfile.driver, .)	2m 25s
build / image-build-with-cache (metadata-envoy, third_party/metadata_envoy/Dockerfile, .)	36s
KFP Webhooks - K8s v1.29.2	14m 2s
KFP Webhooks - K8s v1.34.0	14m 13s
	55m 55s

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