WIP: Swap Task to storage version

[JeromeJu]

Changes

This commit swaps Task to storage version.
It is kept separated and small instead of swapping all the CRDs for the goal of hygiene of PRs.

Part 3 of #5541

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[JeromeJu]

/kind misc

[JeromeJu]

/test check-pr-has-kind-label

[tekton-robot]

@JeromeJu: PR needs rebase.

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