The latest version of the hashicorp/setup-packer GitHub action uses nodejs version 20

# Expected Behavior: The action succeeds

## Current Behavior: The action fails, failing the GitHub Actions workflow

## Steps to Reproduce: Run any GitHub Actions workflow which uses the hashicorp/setup-packer action

## Environment: code snippet below

```
      - name: Setup `packer`
        uses: hashicorp/setup-packer@main
        with:
          version: "latest"

```
