🏃 Prep v0.3.11

[detiber]

What this PR does / why we need it:

Bumps version for v0.3.11 release and updates the github action for releasing to automatically generate release notes for a given release.

[k8s-ci-robot]

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[displague]

Is config/kustomization.yaml the only file make release-version stamps?
https://github.com/kubernetes-sigs/cluster-api-provider-packet/blob/main/docs/RELEASE.md

[detiber]

Is config/kustomization.yaml the only file make release-version stamps? https://github.com/kubernetes-sigs/cluster-api-provider-packet/blob/main/docs/RELEASE.md

It is, that's where it is picked up for filling in the template properly when generating the templates for release.