update kubernetes version

[medyagh]

I used the script

cd hack/update/kubernetes_version
go run update_kubernetes_version.go

except it didnt generate the test data

pkg/minikube/bootstrapper/bsutil/kubeadm_test.go
pkg/minikube/bootstrapper/bsutil/testdata/v1.20.0-beta.1

[prezha]

@medyagh yes, we'll find a way to add new test data with new k8s version
do you think that the folder should be called

pkg/minikube/bootstrapper/bsutil/testdata/v1.20

ie, v<major>.<minor>, instead of

pkg/minikube/bootstrapper/bsutil/testdata/v1.20.0-beta.1

like all the others there, so that we don't need to change it with every patch and/or -beta/-rc release?

[medyagh]

/ok-to-test

[minikube-pr-bot]

kvm2 Driver
error collecting results for kvm2 driver: timing run 0 with Minikube (PR 9693): timing cmd: [/home/performance-monitor/.minikube/minikube-binaries/9693/minikube start --driver=kvm2]: starting cmd: fork/exec /home/performance-monitor/.minikube/minikube-binaries/9693/minikube: exec format error
docker Driver
error collecting results for docker driver: timing run 0 with Minikube (PR 9693): timing cmd: [/home/performance-monitor/.minikube/minikube-binaries/9693/minikube start --driver=docker]: starting cmd: fork/exec /home/performance-monitor/.minikube/minikube-binaries/9693/minikube: exec format error

[k8s-ci-robot]

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