Update dependency ember-inflector to v5 (#9164)

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

Author: renovate[bot]

package.json

@@ -141,7 +141,7 @@
   },
   "resolutions": {
     "ember-get-config": "2.1.1",
-    "ember-inflector": "4.0.3",
+    "ember-inflector": "5.0.0",
     "ember-modifier": "4.2.0",
     "miragejs": "0.1.48"
   },