update xcode version to 2.0.0 (#23051)
update xcode version to 2.0.0 (#23051)

Summary:
Update `xcode` package from 1.0.0 to 2.0.0 due to vulnerability issues affecting `plist`. Please, find below excerpt of the Snyk report.

> LOW SEVERITY
> Regular Expression Denial of Service (ReDoS)
> **Vulnerable module**: plist
> **Introduced through**: react-native@0.57.5
> **Introduced through**: learner-tools-miniapp@0.0.1 › react-native@0.57.5 › xcode@1.0.0 › simple-plist@0.2.1 › plist@2.0.1
>
> **Overview**
> plist is a Mac OS X Plist parser/builder for Node.js and browsers
>
> Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) attacks due to bundling a vulnerable version of the XMLBuilder package. This can cause an impact of about 10 seconds matching time for data 60 characters long.
Pull Request resolved: https://github.com/facebook/react-native/pull/23051

Differential Revision: D13716882

Pulled By: hramos

fbshipit-source-id: 8aa91c8ac85d31b72302b7d24e76bd61623bbbda

exponent/react-native,hammerandchisel/react-native,hammerandchisel/react-native,janicduplessis/react-native,javache/react-native,janicduplessis/react-native,janicduplessis/react-native,hoangpham95/react-native,javache/react-native,facebook/react-native,pandiaraj44/react-native,facebook/react-native,exponentjs/react-native,exponentjs/react-native,facebook/react-native,myntra/react-native,hoangpham95/react-native,myntra/react-native,javache/react-native,javache/react-native,pandiaraj44/react-native,javache/react-native,myntra/react-native,exponent/react-native,hammerandchisel/react-native,facebook/react-native,hammerandchisel/react-native,exponent/react-native,javache/react-native,pandiaraj44/react-native,pandiaraj44/react-native,javache/react-native,janicduplessis/react-native,janicduplessis/react-native,javache/react-native,janicduplessis/react-native,hoangpham95/react-native,hoangpham95/react-native,exponentjs/react-native,myntra/react-native,janicduplessis/react-native,pandiaraj44/react-native,facebook/react-native,exponent/react-native,hoangpham95/react-native,exponent/react-native,myntra/react-native,hoangpham95/react-native,myntra/react-native,exponentjs/react-native,facebook/react-native,exponentjs/react-native,facebook/react-native,exponentjs/react-native,arthuralee/react-native,myntra/react-native,exponentjs/react-native,arthuralee/react-native,hammerandchisel/react-native,myntra/react-native,hammerandchisel/react-native,myntra/react-native,janicduplessis/react-native,hoangpham95/react-native,pandiaraj44/react-native,hammerandchisel/react-native,pandiaraj44/react-native,arthuralee/react-native,javache/react-native,facebook/react-native,exponentjs/react-native,hammerandchisel/react-native,facebook/react-native,arthuralee/react-native,exponent/react-native,hoangpham95/react-native,arthuralee/react-native,pandiaraj44/react-native,exponent/react-native,exponent/react-native