Add \u002F insted of / ,when use shipjs setup

[tyankatsu0105]

Describe the bug
Insert \u002F in ship.config.js

module.exports = {
  publishCommand: ({ defaultCommand }) => `${defaultCommand} --access public`,
  mergeStrategy: { toReleaseBranch: { master: "releases" } },
  monorepo: {
    mainVersionFile: "lerna.json",
    packagesToBump: '["packages\u002F*"]',
    packagesToPublish: '["packages\u002F*"]'
  },
  buildCommand: () => null
};

To Reproduce
Steps to reproduce the behavior:

1. Set lerna.json
2. run shipjs setup
3. check ship.config.js

Expected behavior
Use / instead of u002F.

Screenshots
If applicable, add screenshots to help explain your problem.

Environment (please complete the following information):

• environment: (your local machine, CircleCI, Travis CI, etc.)
• node -v: 12.13.0
• npm -v or yarn -v:
• Ship.js version: 0.12.0

Additional context
It may cause, here:
https://github.com/algolia/shipjs/blob/master/packages/shipjs/src/step/setup/addShipConfig.js#L54

https://www.npmjs.com/package/serialize-javascript#automatic-escaping-of-html-characters

このパッケージの主な機能は、<script>要素のコンテンツとして追加することにより、HTMLドキュメントに埋め込むことができるリテラルJavaScriptの文字列にコードをシリアル化することです。

I think in this case, don't need to use escape.

[eunjae-lee]

Thanks for the report :)
Would you like to work on this?
As you know @uetchy already provided a way to fix this:
https://shipjs.slack.com/archives/CRTUJSCQ7/p1577101355020200