Dependency update - Golang 1.26

### Tracking info

Link to any previous tracking issue: https://github.com/kubernetes/release/issues/3957

Golang mailing list announcement: https://groups.google.com/g/golang-announce/c/uVOCkuwbiD8/m/qndZA3kIAgAJ

SIG Release Slack thread:

### Work items

- [x] `kube-cross`, `go-runner`, `releng-ci` image updates: https://github.com/kubernetes/release/pull/4271

- [x] `kube-cross` image promotion: https://github.com/kubernetes/k8s.io/pull/9124

- [x] `go-runner` image promotion: https://github.com/kubernetes/k8s.io/pull/9123

- [x] `releng-ci` image promotion: https://github.com/kubernetes/k8s.io/pull/9122

#### After go-runner image promotion

- [x] `distroless-iptables` image update: https://github.com/kubernetes/release/pull/4278

- [x] image promotion: https://github.com/kubernetes/k8s.io/pull/9127

#### After kube-cross and distroless-iptables image promotions

- [x] kubernetes/kubernetes update (`master`): https://github.com/kubernetes/kubernetes/pull/137080

Ensure the following have been updated within the PR:

- [x] `.go-version` file
- [x] kube-cross image
- [x] go-runner image
- [x] distroless-iptables image
- [x] publishing bot rules

> **Note**
> This update may require an update to go.sum files, for example: https://github.com/kubernetes/kubernetes/pull/118507
> This will require an API Review approval.

#### After kubernetes/kubernetes (master) has been updated

- [ ] `k8s-cloud-builder` and `k8s-ci-builder` image updates: https://github.com/kubernetes/release/pull/4323

- [ ] `kubekins`/`krte` image variants update: https://github.com/kubernetes/test-infra/pull/36663

### Cherry picks

- [ ] Kubernetes 1.y-1:
- [ ] Kubernetes 1.y-2:
- [ ] Kubernetes 1.y-3:

- [ ] publishing bot rule updates for active Golang versions:

#### After kubernetes/kubernetes (release branches) has been updated

- [ ] `k8s-cloud-builder` and `k8s-ci-builder` image updates:

- [ ] `kubekins`/`krte` image updates:

### Follow-up items

- [x] Ensure the Golang issue template is updated with any new requirements
- [ ]

/assign
cc: @kubernetes/release-engineering