Composer 2.2 - define allow-plugins

[ostark]

With Composer 2.2+ composer plugins need a verification
https://getcomposer.org/doc/06-config.md#allow-plugins

Consider to add this config section, to avoid the prompt when installing the dependencies the first time:

 "config": {
    "allow-plugins": {
      "yiisoft/yii2-composer": true,
      "craftcms/plugin-installer": true
    }
  }, 

[ostark]

Oh @khalwat was quicker than me!
d4c3214