chore(deps): update dependency @1stg/app-config to ^0.6.1

Author: renovate[bot]

package.json

@@ -36,7 +36,7 @@
     "lodash.set": "^4.3.2"
   },
   "devDependencies": {
-    "@1stg/app-config": "^0.1.15",
+    "@1stg/app-config": "^0.6.1",
     "@1stg/lib-config": "^0.1.13",
     "@types/enzyme": "^3.10.3",
     "@types/enzyme-adapter-react-16": "^1.0.5",