bump kubernetes dependencies to 1.26.1

[aojea]

Current version of the Kubernetes APIs is too old 1.20

Update the repo to latest stable version Kubernetes 1.26.1

There was necessary to adapt the codebase:

• compile with 1.20, that is the latest golang version and the one supported in current kubernetes version
• migrate from the deprecated and removed apimachinery/clock library to k8s.io/utils/clockPrepare clock package to be compatible replacement of apimachinery/util/clock utils#224 in the pkg/negfolder
• migrate from v1.LoadBalancerStatus to networkingv1.IngressLoadbalancerStatus Copy LoadBalancerStatus from core to networking kubernetes#106242
• migrate from v1.Handler to v1.ProbeHandler De-share the Handler struct in core API kubernetes#105979
• update golangci-lint to not fail on the new signature of k8s.io/client-go/tools/cache/cache.SharedInformer.AddEventHandler

[aojea]

/assign @swetharepakula @cezarygerard
/cc @mmamczur

/priority important-soon

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In response to this:

/assign @swetharepakula @cezarygerard
/cc @mmamczur

/priority important-soon

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[aojea]

/priority important-soon
/assign @spencerhance

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In response to this:

/priority important-soon
/assign @spencerhance

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[cezarygerard]

lgtm overall
THANK YOU!

[swetharepakula]

should this be 1.20?

[aojea]

https://go.dev/ref/mod

go directive
A go directive indicates that a module was written assuming the semantics of a given version of Go. The version must be a valid Go release version: a positive integer followed by a dot and a non-negative integer (for example, 1.9, 1.14).

it was to be conservative and not make a big jump

[swetharepakula]

Thank you for this change! This looks good to me. The only question I had was whether we should regenerate go.mod with Go 1.20. But I think that doesn't need to keep this PR from merging.

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aojea, swetharepakula

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