chore(deps): update dependency ember-modifier to v4

Author: renovate[bot]

ember-file-upload/package.json

@@ -76,7 +76,7 @@
     "@typescript-eslint/parser": "^6.0.0",
     "concurrently": "^8.0.1",
     "ember-cli-htmlbars": "^6.1.1",
-    "ember-modifier": "^3.2.7",
+    "ember-modifier": "^4.0.0",
     "ember-source": "~5.5.0",
     "ember-template-lint": "^5.0.0",
     "eslint": "^8.42.0",