Create 0.31.x release (branch and tags)

[jkh52]

Draft of possible tasks:

• Clear blockers
  • Unblock gomod-dependencies robot (currently stuck)
  • Fix lint error (affecting all PRs against master branch)
• Cut release-0.31 branch
  • Update test-infra configs
• Create tag 0.31.0
• Promote images

[jkh52]

/assign @cheftako

per OSS biweekly.

[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
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

• Mark this issue as fresh with /remove-lifecycle stale
• Close this issue with /close
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/lifecycle stale