fix ember-cli-fastboot-testing should use linked [email protected]

Author: Gaurav0

package.json

@@ -21,6 +21,9 @@
     "npm-run-all": "^4.1.5",
     "release-it": "^14.2.2"
   },
+  "resolutions": {
+    "fastboot": "4.1.1"
+  },
   "publishConfig": {
     "registry": "https://registry.npmjs.org"
   },