chore(deps): update dependency @ember/test-helpers to v5 (#1113)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

ember-file-upload/package.json

@@ -61,7 +61,7 @@
     "@babel/preset-typescript": "^7.21.5",
     "@babel/runtime": "^7.26.10",
     "@ember/string": "^4.0.0",
-    "@ember/test-helpers": "^4.0.4",
+    "@ember/test-helpers": "^5.0.0",
     "@embroider/addon-dev": "^4.0.0",
     "@glimmer/component": "^1.0.4",
     "@glimmer/tracking": "^1.0.4",