Remote resolvers fail to save ECR cache

[wilstdu]

Expected Behavior

ECR cache is not saved or saved without any errors.

Actual Behavior

Informational message is printed to the log file of the remote-resolvers pod:
time="2024-07-17T09:19:00Z" level=info msg="Could not save cache" error="open /home/nonroot/.ecr/.config.json.tmp3584167484: no such file or directory" {"severity":"info","timestamp":"2024-07-17T09:19:00.746Z","logger":"controller","caller":"controller/controller.go:550","message":"Reconcile succeeded","commit":"c2dc17a","knative.dev/traceid":"03ec6812-a0ec-4411-a1c0-8e0a4bbbaf32","knative.dev/key":"sampleNamespace/bundles-5ddfffa86236054d5997c0cfb131927e","duration":0.201757796}

The message itself doesn't seem to have any impact, but it's annoying to see that something always fails.

Steps to Reproduce the Problem

1. Just have remote resolvers enabled
2. Ask the resolver to resolve bundles from AWS ECR (in PipelineRun reference bundle from ECR)

Additional Info

• Kubernetes version: 1.29
• Tekton Pipeline version: 0.61.0