velero upgrade to 12.0.0-bb.0

General MR

Summary

Removes velero service override and upgrades Velero to 12.0.0-bb.0.

12.0.0-bb.0 bumps several charts/images and cleans up several areas of the code.

Relevant logs/screenshots

n/a

Linked Issue

Closes big-bang/product/packages/velero#179 (closed)

Upgrade Notices

• Upstream chart bumped to 12.0.0 (major). See upstream release notes and PR 706 for breaking changes.
• Velero app updated to v1.18.0. See Velero v1.18.0 release notes.
• upstream.resources.upgradeJob removed in favor of upstream.upgradeJobResources (fixes #3196 (closed)).

The Velero ServiceAccount name is no longer overridden with velero. Velero's default name for this ServiceAccount of velero-server is now being used. No changes should be needed unless you specifically reference this ServiceAccount name in any of your installations.