Update dependency ember-load-initializers to v3 (#9516)

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

Author: renovate[bot]

package.json

@@ -101,7 +101,7 @@
     "ember-fetch": "8.1.2",
     "ember-keyboard": "9.0.1",
     "ember-link": "3.2.0",
-    "ember-load-initializers": "2.1.2",
+    "ember-load-initializers": "3.0.1",
     "ember-modifier": "4.2.0",
     "ember-page-title": "8.2.3",
     "ember-qunit": "8.1.0",