[chains-v1.0.0] Convert Tekton v1 Object References Back to v1beta1 for backwards compatibility for Provenance Formatting

[aaron-prindle]

This issue tracks converting Tekton v1 Object References Back to v1beta1 for backwards compatibility for provenance formatting. The work required here is generally to ensure pkg/chains/formats/* all use v1beta1 objects (v1 -> v1beta1) to ensure as close to original as possible for upgrading users.

Subtask of #665