Update dependencies with deprecated node version

[jeffpaul]

In checking the readme updater action on AS4T, I noticed that it was throwing some warnings about the actions/checkout needing to be updated (it could go from v2 to v4), but instead of just updating that one repo I figured I'd open an issue here for someone to go across our projects and updating all related actions (probably worth checking what other actions are using deprecated node dependencies that could be updated).