Bump okhttp from 3.14.2 to 4.0.0
Bump okhttp from 3.14.2 to 4.0.0

Bumps [okhttp](https://github.com/square/okhttp) from 3.14.2 to 4.0.0.
- [Release notes](https://github.com/square/okhttp/releases)
- [Changelog](https://github.com/square/okhttp/blob/master/CHANGELOG.md)
- [Commits](https://github.com/square/okhttp/compare/parent-3.14.2...parent-4.0.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
whiskeysierra/tracer,whiskeysierra/tracer,zalando/tracer,zalando/tracer