pie config - cant use npm tags for dependencies

[edeustace]

in a config.js for a pie item I can add:

module.exports = {
  elements: {
    'my-el': '@my-el@1.0.0'
  }
}

But not:

module.exports = {
  elements: {
    'my-el': '@my-el@latest'
  }
}

It fails in the pie-cli-libs/installer: https://github.com/pie-framework/pie-cli-libs/blob/develop/packages/installer/src/installer.ts#L100 where it can't find the installed package using the tag name.