[WIP] 🌱 Test api serialization

[fabriziopandini]

What this PR does / why we need it:
Experiment on how to ensure better quality of the next API version

/area runtime-sdk

[k8s-ci-robot]

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[k8s-ci-robot]

@fabriziopandini: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-cluster-api-test-main	db71a08	link	true	/test pull-cluster-api-test-main

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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