[@kbn/utils] Adds missing dependency (#77536)

Signed-off-by: Tyler Smalley <[email protected]>

Author: Tyler Smalley

packages/kbn-utils/package.json

@@ -10,7 +10,8 @@
     "kbn:watch": "yarn build --watch"
   },
   "dependencies": {
-    "@kbn/config-schema": "1.0.0"
+    "@kbn/config-schema": "1.0.0",
+    "load-json-file": "^6.2.0"
   },
   "devDependencies": {
     "typescript": "4.0.2"