Node 16 actions are deprecated

[sjstark]

Getting this annotated warning

[Execute Order Processor (subscription)](https://github.com/BKWLD/clifbar.com/actions/runs/8426321661/job/23074385254)
Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, actions/setup-node@v3, actions/cache@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

[sjstark]

I'm not 100% sure on this, but our .nvmrc with 16 could be an issue?
https://github.com/BKWLD/cloak-actions/blob/main/install/action.yml#L11-L14

[weotch]

I think the issue is that some actions that we use (actions/checkout@v3, actions/setup-node@v3, actions/cache@v3) need to be updated to newer, Node 20+ versions.

[sjstark]

Gotcha, so we should just update those to their @v4 versions

[sjstark]

Not sure the best way to test, but I imagine this PR is what we're looking at doing: #2