Discussion: Using engines in the package.json

Currently some packages has drop support to Node.js prior to v18, seems like we didn't upgrade the engines field in the `package.json` discordantly.

So, I will like to discuss if this a policy that we should follow as an organization to all the packages (so in that case we can also document it).

:warning: So far seems like Express actually updated the package ([ref](https://github.com/expressjs/express/blob/master/package.json#L83)) but not in others like finalhandler ([ref](https://github.com/pillarjs/finalhandler/blob/master/package.json#L38))

Ref:
- https://github.com/pillarjs/finalhandler/issues/64
- https://github.com/pillarjs/finalhandler/pull/59 (great context on why not update by @wesleytodd )

cc: @expressjs/express-tc @Phillip9587