/kind discussion

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According to this, It seems that K8s v1.22 will reach EOL on 2022-10-28 and K8s v1.25 was released on 2022-08-23.
Hence, we need to consider which K8s versions to support on the next katib version (v0.15.0?).

Maybe, once the next katib release date is set, we can decide it.

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