chore(deps): update dependency @1stg/lib-config

Author: renovate-bot

package.json

@@ -37,7 +37,7 @@
   },
   "devDependencies": {
     "@1stg/app-config": "^0.1.15",
-    "@1stg/lib-config": "^0.1.13",
+    "@1stg/lib-config": "^0.1.21",
     "@types/enzyme": "^3.10.3",
     "@types/enzyme-adapter-react-16": "^1.0.5",
     "@types/jest": "^24.0.22",