message: core: fix peerDependencies
diff: "react-test-renderer": "^16.8.0"
  },
  "peerDependencies": {
  - "@edtr-io/ui": "^0.8.2",
  + "@edtr-io/ui": "^0.9.0",
  "react": "^16.8.0",
  "react-dnd": "^7.0.0",
  "react-dnd-html5-backend": "^7.0.0",
  