Update dependency @ember/test-helpers to v2.2.9

Author: renovate-bot

package.json

@@ -51,7 +51,7 @@
   "devDependencies": {
     "@ember/optional-features": "2.0.0",
     "@ember/render-modifiers": "1.0.2",
-    "@ember/test-helpers": "2.2.8",
+    "@ember/test-helpers": "2.2.9",
     "@embroider/compat": "0.43.0",
     "@embroider/core": "0.43.0",
     "@embroider/webpack": "0.43.0",

yarn.lock

@@ -1165,10 +1165,10 @@
   dependencies:
     ember-cli-babel "^7.4.0"
 
-"@ember/[email protected].8":
-  version "2.2.8"
-  resolved "https://registry.yarnpkg.com/@ember/test-helpers/-/test-helpers-2.2.8.tgz#3f1c1ab828098e4a6a6209b7c28b124ac614a73f"
-  integrity sha512-1en4cBDoI3+1xtl7k5QtGpPgKmuvF0D7Azs0JSlv3ttV1Fxb3ukLZ/2Giz1IOEMogO4B+k7fGFeYpANVJuNWqA==
+"@ember/[email protected].9":
+  version "2.2.9"
+  resolved "https://registry.yarnpkg.com/@ember/test-helpers/-/test-helpers-2.2.9.tgz#68cceb50ad5b8adedad5d8bf73b39ff71a07f4a6"
+  integrity sha512-QLwV2ASk7XB9+SLCNKFu+y9iNbTsH2Ah3eaJiHZ01uDgVsYZZfJCINhUB9/sY19VagBQnP5Te3QowI6qw3XeLA==
   dependencies:
     "@ember/test-waiters" "^2.4.4"
     broccoli-debug "^0.6.5"