Migrate action to run on Node16

[lsytj0413]

Is your feature request related to a problem? Please describe.

• When run prow-actions, got this warning:
  Node.js 12 actions are deprecated. For more information see: https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/. Please update the following actions to use Node.js 16: jpmcb/prow-github-actions

Describe the solution you'd like

• Without any warning

Describe alternatives you've considered

Additional context

[jpmcb]

Thank you so much for the heads up! Good call - will take care of this as soon as I can!

[github-actions]

Issue is stale

[jpmcb]

Action now runs on node 20:

prow-github-actions/action.yml

Lines 20 to 22 in 10f4c1a

	runs:
	using: node20
	main: dist/index.js