Update dependency qunit to v2.21.0

Author: renovate[bot]

package.json

@@ -26,7 +26,7 @@
   },
   "devDependencies": {
     "inquirer-test": "2.0.1",
-    "qunit": "2.20.1",
+    "qunit": "2.21.0",
     "release-it": "14.14.3",
     "release-it-lerna-changelog": "5.0.0"
   },

yarn.lock

@@ -2917,10 +2917,10 @@ query-string@^6.13.8:
     split-on-first "^1.0.0"
     strict-uri-encode "^2.0.0"
 
-qunit@2.20.1:
-  version "2.20.1"
-  resolved "https://registry.yarnpkg.com/qunit/-/qunit-2.20.1.tgz#280da17c258535f2c14520f018d2eec1191b20cf"
-  integrity sha512-scZfyhX8mmP3u/CN2y3CutQb+ppalbpqmm7g/X62M2yOt8ofzsxrRaC+MPmYm/tXxpzs9HGrVeCxZwLoP0tuAA==
+qunit@2.21.0:
+  version "2.21.0"
+  resolved "https://registry.yarnpkg.com/qunit/-/qunit-2.21.0.tgz#c3d35adb1c9df8176459665f2daf33170c0f8662"
+  integrity sha512-kJJ+uzx5xDWk0oRrbOZ3zsm+imPULE58ZMIrNl+3POZl4a1k6VXj2E4OiqTmZ9j6hh9egE3kNgnAti9Q+BG6Yw==
   dependencies:
     commander "7.2.0"
     node-watch "0.7.3"