Bump json from 20190722 to 20200518
Bump json from 20190722 to 20200518

Bumps [json](https://github.com/douglascrockford/JSON-java) from 20190722 to 20200518.
- [Release notes](https://github.com/douglascrockford/JSON-java/releases)
- [Commits](https://github.com/douglascrockford/JSON-java/commits)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
jenkinsci/analysis-model,jenkinsci/analysis-model,jenkinsci/analysis-model,jenkinsci/analysis-model