In composer.json, in require add this:
        "bower-asset/jquery": "3.5.1",
        "bower-asset/inputmask" :"3.3.11",
        "bower-asset/punycode" : "v1.3.2",
        "bower-asset/yii2-pjax" :"2.0.7.1",
        "bower-asset/bootstrap" :  "v3.4.1"