Update yeoman-generator from 4.13.0 to 5.6.1 (#4298)

Author: sw-joelmut

Diff for: generators/generator-botbuilder/generators/app/index.js

@@ -22,6 +22,7 @@ const {
     BOT_TEMPLATE_NOPROMPT_CORE
     } = require('../../components/constants');
 
+_.extend(Generator.prototype, require('yeoman-generator/lib/actions/install'));
 
 /**
  * Main Generator derivative.  This is what Yeoman calls to invoke our generator

Diff for: generators/generator-botbuilder/package.json

@@ -27,6 +27,6 @@
         "chalk": "^4.0.0",
         "lodash": "^4.17.15",
         "mkdirp": "^1.0.4",
-        "yeoman-generator": "^4.13.0"
+        "yeoman-generator": "^5.6.1"
     }
 }