Evaluate alternatives for `postinstall` npm lifecycle script in CLI

[t1m0thyj]

The CLI package has a postinstall script which validates plug-ins:

zowe-cli/packages/cli/package.json

Line 46 in 71e5573

"postinstall": "node ./scripts/validatePlugins && node ./scripts/printSuccessMessage",

In npm 12, lifecycle scripts will be disabled by default and controlled by the allowScripts option:

Install scripts are off by default. preinstall, install, and postinstall from dependencies won't run unless explicitly allowed.

^{Source: https://github.com/orgs/community/discussions/198547}

Consider alternatives for the postinstall script, such as adding a check when the CLI launches to see if version has been updated.