Changes

refactor(tekton): migrate release tasks and pipelines from v0 to v1 (#4038)

Changes:
1. Moves the pingcap-release-ga pipeline from v0 to v1
2. Updates the pipeline to use Tekton v1 API 
4. Changes workspace names from aws-* to s3-secrets
5. Updates the OCI registry URL
6. Removes deprecated tasks from v0 kustomization files
7. Adds release-related tasks to v1 kustomization
8. Updates task schemas and resource specifications
9. Standardizes the task organization under a release directory
 (commit: eaa318e)