fix legacy mocha tests for node 14

Author: Gaurav0

packages/ember-cli-fastboot/test/fastboot-config-test.js

@@ -25,7 +25,7 @@ describe('FastBoot config', function () {
           delete pkg.devDependencies['ember-fetch'];
           delete pkg.devDependencies['ember-welcome-page'];
           // needed because @ember-data/store does `FastBoot.require('crypto')`
-          pkg.fastbootDependencies = ['node-fetch', 'path', 'crypto'];
+          pkg.fastbootDependencies = ['node-fetch', 'path', 'crypto', 'chalk'];
         });
         return app.run('npm', 'install');
       })