Update K8s versions tested in E2E #4161

Job	Run time
E2E Consuming (admiral, operator, libreswan, 1.28)	3m 49s
E2E Consuming (lighthouse, operator, libreswan, 1.28)	11m 43s
E2E Consuming (lighthouse, helm, libreswan, 1.28)	11m 25s
E2E Consuming (subctl, operator, libreswan, 1.28)	9m 53s
E2E Consuming (subctl, helm, libreswan, 1.28)	7m 57s
E2E Consuming (submariner, operator, libreswan, 1.28)	10m 44s
E2E Consuming (submariner, helm, libreswan, 1.28)	15m 56s
E2E Consuming (submariner-operator, operator, libreswan, 1.28)	8m 13s
E2E Consuming (submariner, wireguard)	11m 48s
E2E Consuming (submariner-operator, 1.26)	7m 41s
Lint	0s
Unit Tests	0s
	1h 39m 9s

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