chore(deps-dev): bump @ember/test-helpers from 2.7.0 to 2.8.1

Bumps [@ember/test-helpers](https://github.com/emberjs/ember-test-helpers) from 2.7.0 to 2.8.1.
- [Release notes](https://github.com/emberjs/ember-test-helpers/releases)
- [Changelog](https://github.com/emberjs/ember-test-helpers/blob/master/CHANGELOG.md)
- [Commits](emberjs/ember-test-helpers@v2.7.0...v2.8.1)

---
updated-dependencies:
- dependency-name: "@ember/test-helpers"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -46,7 +46,7 @@
     "@adfinis-sygroup/eslint-config": "1.5.0",
     "@adfinis-sygroup/semantic-release-config": "3.4.0",
     "@ember/optional-features": "2.0.0",
-    "@ember/test-helpers": "2.7.0",
+    "@ember/test-helpers": "2.8.1",
     "@embroider/test-setup": "1.6.0",
     "@fortawesome/ember-fontawesome": "0.4.0",
     "@fortawesome/free-solid-svg-icons": "6.1.1",

yarn.lock

@@ -1374,12 +1374,14 @@
   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@2.8.1":
+  version "2.8.1"
+  resolved "https://registry.yarnpkg.com/@ember/test-helpers/-/test-helpers-2.8.1.tgz#20f2e30d48172c2ff713e1db7fbec5352f918d4e"
+  integrity sha512-jbsYwWyAdhL/pdPu7Gb3SG1gvIXY70FWMtC/Us0Kmvk82Y+5YUQ1SOC0io75qmOGYQmH7eQrd/bquEVd+4XtdQ==
   dependencies:
     "@ember/test-waiters" "^3.0.0"
+    "@embroider/macros" "^1.6.0"
+    "@embroider/util" "^1.6.0"
     broccoli-debug "^0.6.5"
     broccoli-funnel "^3.0.8"
     ember-cli-babel "^7.26.6"
@@ -1396,7 +1398,7 @@
     ember-cli-version-checker "^5.1.2"
     semver "^7.3.5"
 
-"@embroider/[email protected]", "@embroider/macros@^0.50.0 || ^1.0.0", "@embroider/macros@^1.0.0":
+"@embroider/[email protected]", "@embroider/macros@^0.50.0 || ^1.0.0", "@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==
@@ -1432,7 +1434,7 @@
     lodash "^4.17.21"
     resolve "^1.20.0"
 
-"@embroider/util@^1.0.0":
+"@embroider/util@^1.0.0", "@embroider/util@^1.6.0":
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/@embroider/util/-/util-1.6.0.tgz#6a817dfd5192afaab41e80ebce623d5812b30985"
   integrity sha512-oUQDAMiAATHsiNwEMH/SzNSQ/Z5wDr9f6NImsDIFLvDT6T34/p7cqR4wyfrfMRtcc1EB6PbwhZ6bXYsJ6QPWRA==