message: update token metadata verison
diff: "iotex-react-block-producers": "2.9.5",
  "iotex-react-language-dropdown": "2.4.3",
  "iotex-testnet-token-metadata": "^1.0.8",
  - "iotex-token-metadata": "^1.2.0",
  + "iotex-token-metadata": "^1.2.1",
  "is-browser": "2.1.0",
  "is-electron": "2.2.0",
  "isomorphic-unfetch": "3.0.0",
  "node": "10.22.0",
  "npm": "6.9.0"
  },
  - "private": true
  + "private": true,
  + "volta": {
  + "node": "11.15.0"
  + }
  }
  