bump more outdated dependencies

Author: Gaurav0

packages/ember-cli-fastboot/package.json

@@ -73,11 +73,11 @@
     "ember-disable-prototype-extensions": "^1.1.3",
     "ember-export-application-global": "^2.0.1",
     "ember-load-initializers": "^2.1.2",
-    "ember-maybe-import-regenerator-for-testing": "^1.0.0",
+    "ember-maybe-import-regenerator": "^1.0.0",
     "ember-page-title": "^7.0.0",
     "ember-qunit": "^5.1.5",
     "ember-resolver": "^8.0.3",
-    "ember-sinon": "^2.2.0",
+    "ember-sinon": "^5.0.0",
     "ember-source": "~3.28.11",
     "ember-source-channel-url": "^3.0.0",
     "ember-template-lint": "^3.15.0",