Update to inputmask v5.0.9

The change we needed was released so we no longer need the beta version.

Author: Windvis

package-lock.json

@@ -98,13 +98,10 @@
     "ember-template-imports": "^4.1.1",
     "ember-test-selectors": "^6.0.0",
     "ember-truth-helpers": "^3.1.1 || ^4.0.3",
-    "inputmask": "^5.0.9-beta.45",
+    "inputmask": "^5.0.9",
     "merge-anything": "^5.1.3",
     "tracked-toolbox": "^2.0.0"
   },
-  "dependenciesComments": {
-    "inputmask": "switch back to the stable releases once 5.0.9+ is out. More info: https://github.com/appuniversum/ember-appuniversum/issues/462"
-  },
   "devDependencies": {
     "@ember/optional-features": "^2.0.0",
     "@ember/test-helpers": "^3.2.1",