Allow us work with branches named with MAJOR.MINOR versions

[camilamacedo86]

Controller-runtime and Kubebuilder has been creating branches called like release-3.15 but the tool does not allow us work within, see:

2024/05/24 07:43:23 starting from branch "release-4.0"
2024/05/24 07:43:23 "release-4.0" is not a valid release branch (release-0.Y or release-X)
exit status 1

It would be great if the tool could allow release-X.Y

[k8s-triage-robot]

The Kubernetes project currently lacks enough contributors to adequately respond to all issues.

This bot triages un-triaged issues according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
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/lifecycle stale