Update dependency ember-inflector to v6 (#10817)

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

Author: renovate[bot]

package.json

@@ -103,7 +103,7 @@
     "ember-event-helpers": "0.1.1",
     "ember-exam": "9.1.0",
     "ember-fetch": "8.1.2",
-    "ember-inflector": "5.0.2",
+    "ember-inflector": "6.0.0",
     "ember-keyboard": "9.0.1",
     "ember-link": "3.3.0",
     "ember-load-initializers": "3.0.1",
@@ -148,7 +148,7 @@
   "resolutions": {
     "ember-auto-import": "2.10.0",
     "ember-get-config": "2.1.1",
-    "ember-inflector": "5.0.2",
+    "ember-inflector": "6.0.0",
     "ember-modifier": "4.2.0",
     "ember-svg-jar>cheerio": "1.0.0-rc.12"
   },