update fastboot-testing

Author: mansona

package.json

@@ -52,7 +52,7 @@
     "ember-cli": "~4.12.1",
     "ember-cli-dependency-checker": "^3.3.1",
     "ember-cli-fastboot": "^4.1.1",
-    "ember-cli-fastboot-testing": "^0.5.0",
+    "ember-cli-fastboot-testing": "^0.6.1",
     "ember-cli-inject-live-reload": "^2.1.0",
     "ember-cli-sri": "^2.1.1",
     "ember-cli-terser": "^4.0.2",