Update dependency @ember/test-helpers to v2.8.0 (#4815)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

package.json

@@ -55,7 +55,7 @@
     "@babel/eslint-parser": "7.17.0",
     "@ember/optional-features": "2.0.0",
     "@ember/render-modifiers": "2.0.4",
-    "@ember/test-helpers": "2.7.0",
+    "@ember/test-helpers": "2.8.0",
     "@ember/test-waiters": "3.0.2",
     "@embroider/compat": "1.6.0",
     "@embroider/core": "1.6.0",

yarn.lock

@@ -1159,12 +1159,13 @@
   dependencies:
     ember-cli-babel "^7.26.6"
 
-"@ember/test-helpers@2.7.0":
-  version "2.7.0"
-  resolved "https://registry.yarnpkg.com/@ember/test-helpers/-/test-helpers-2.7.0.tgz#d8e08b614cdd5eac647689d655e78e1de725f474"
-  integrity sha512-eWFtw5+sbci1Fw+E+HoyaMxY126LvK7jul6i8tad48zlWoxrOalbhJhz1mKqIo4daHbqIZWuFgQhOib4QfTKCQ==
+"@ember/test-helpers@2.8.0":
+  version "2.8.0"
+  resolved "https://registry.yarnpkg.com/@ember/test-helpers/-/test-helpers-2.8.0.tgz#2b28de27fa2063e872aea6e59ebcda5f7b5e13b5"
+  integrity sha512-UF2FF/sPPSuqUePPbWT4o2z90ZT20DEz8KMyez6+BlaAnGyFCPbj0cPmE6se0wEZTpIZ0o/w9blG6wfgqe8Iyw==
   dependencies:
     "@ember/test-waiters" "^3.0.0"
+    "@embroider/macros" "^1.6.0"
     broccoli-debug "^0.6.5"
     broccoli-funnel "^3.0.8"
     ember-cli-babel "^7.26.6"
@@ -1284,7 +1285,7 @@
   resolved "https://registry.yarnpkg.com/@embroider/hbs-loader/-/hbs-loader-1.6.0.tgz#a6a06248969bdb425d6ecc67ac11040e6493f8fb"
   integrity sha512-WwZ6vaG5GevL4xpSXj5tIziaubdoB+dMFoI7rqved8To5WK1MfHJFhHp8S9s0KyzSwb/dL1SdjVzYWbB6SAbzg==
 
-"@embroider/[email protected]", "@embroider/macros@^1.0.0":
+"@embroider/[email protected]", "@embroider/macros@^1.0.0", "@embroider/macros@^1.6.0":
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/@embroider/macros/-/macros-1.6.0.tgz#2b764f965c645fdcfbf05897c88195368b046ba1"
   integrity sha512-yUEXJGJGP3rjtxorxrbkdxriBFEwnmzOrNk4zK64IXKBfyRjiDZFUHV9DSTrbaYLS29Mw5yK73ZIwi8L13C4Zw==