Merge pull request #267 from ember-cli/walk-sync

update walk-sync to v4

Author: NullVoxPopuli

package.json

@@ -35,7 +35,7 @@
     "ember-cli-string-utils": "^1.1.0",
     "lodash": "^4.17.21",
     "sort-package-json": "^3.6.0",
-    "walk-sync": "^3.0.0"
+    "walk-sync": "^4.0.1"
   },
   "devDependencies": {
     "@eslint/js": "^9.3.0",