Build(deps-dev): Bump @types/ember-qunit from 3.4.6 to 3.4.7

Bumps [@types/ember-qunit](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/ember-qunit) from 3.4.6 to 3.4.7.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/ember-qunit)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

package.json

@@ -41,7 +41,7 @@
   "devDependencies": {
     "@ember/optional-features": "^0.7.0",
     "@types/ember": "^3.1.0",
-    "@types/ember-qunit": "^3.4.6",
+    "@types/ember-qunit": "^3.4.7",
     "@types/ember-resolver": "^5.0.7",
     "@types/ember-test-helpers": "^1.0.5",
     "@types/ember-testing-helpers": "^0.0.3",

yarn.lock

@@ -978,10 +978,10 @@
   dependencies:
     defer-to-connect "^1.0.1"
 
-"@types/ember-qunit@^3.4.6":
-  version "3.4.6"
-  resolved "https://registry.yarnpkg.com/@types/ember-qunit/-/ember-qunit-3.4.6.tgz#b09ae84192c16fbd1da0d1be26fa02b67691250d"
-  integrity sha512-ARB2JDNV3qzrZ94fC+YdV9jT9hYAXP8pXcqAVzVEYVL5/upSxKcYZjiCSScpKzXikN8yieIGNqSGArhQrcdzFA==
+"@types/ember-qunit@^3.4.7":
+  version "3.4.7"
+  resolved "https://registry.yarnpkg.com/@types/ember-qunit/-/ember-qunit-3.4.7.tgz#57dad9f01ff6136cdadf2a06b7089af91661d3b5"
+  integrity sha512-1VK5oazKvIenJK9M1DwXncgnpk+G1B1O4N7+ABml+V7+EGVhqpxfS3FRi3Y27+luPCQ3Ya1M8Da76fO85DNLrQ==
   dependencies:
     "@types/ember" "*"
     "@types/ember-test-helpers" "*"