Template string with special character are getting inappropriately autofix to quoted string

```<input placeholder={`line1\nline2`} ></input>``` gets autofix into 
`<input placeholder="line1\nline2" />` which treats the `\n` literally. 

Versions:
    "eslint-config-airbnb": "^16.0.0",
    "eslint-plugin-import": "^2.7.0",
    "eslint-plugin-jsx-a11y": "^6.0.2",
    "eslint-plugin-react": "^7.4.0"
