chore(deps): update dependency org.json:json to v20200518

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
org.json:json	major	20190722 -> 20200518

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Release Notes

douglascrockford/JSON-java

### [`v20200518`](https://togithub.com/douglascrockford/JSON-java/releases/20200518) [Compare Source](https://togithub.com/douglascrockford/JSON-java/compare/20190722...20200518) | Pull Request | Description | | ---------------------------------------------------------------- | ---------------------------------------------------------- | | [#​502](https://togithub.com/douglascrockford/JSON-java/issues/502) | Update JSONTokener text in README | | [#​499](https://togithub.com/douglascrockford/JSON-java/issues/499) | Add copyright to some files | | [#​495](https://togithub.com/douglascrockford/JSON-java/issues/495) | Refactor typos from code | | [#​494](https://togithub.com/douglascrockford/JSON-java/issues/494) | Replace JSONObject constructor string arrays with var args | | [#​492](https://togithub.com/douglascrockford/JSON-java/issues/492) | Clarify output of JSONArray toList() | | [#​486](https://togithub.com/douglascrockford/JSON-java/issues/486) | Standardize some exception messages | | [#​485](https://togithub.com/douglascrockford/JSON-java/issues/485) | Fix EOF error when Meta tag isn't closed at end of input. | | [#​483](https://togithub.com/douglascrockford/JSON-java/issues/483) | Update README.md to point to latest released jar | | [#​481](https://togithub.com/douglascrockford/JSON-java/issues/481) | Clarify exception when parser reads JSON | | [#​475](https://togithub.com/douglascrockford/JSON-java/issues/475) | Make private methods static where possible | | [#​474](https://togithub.com/douglascrockford/JSON-java/issues/474) | Replaces an internally used inefficient StringBuffer class |

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