In August 2025 or later - drop support for k8s 1.30

[consideRatio]

This is an issue to help us remember the policy (see #2591, #2979, #3040, #3042, #3309, #3320, #3321, #3509, #3510, #3511) to allow ourselves to drop support for k8s versions as long as major cloud providers has stopped supporting them.

k8s	GKE EOL	EKS EOL	AKS EOL	Comment
1.30	31 Jul 2025	23 Jul 2025	Jul 2025	We can drop support ~August 2025