2.1.115

Update json requirement from 2.19.0 to 2.19.1 (#116)

Updates the requirements on [json](https://github.com/ruby/json) to permit the latest version.
- [Release notes](https://github.com/ruby/json/releases)
- [Changelog](https://github.com/ruby/json/blob/master/CHANGES.md)
- [Commits](https://github.com/ruby/json/compare/v2.19.0...v2.19.1)

---
updated-dependencies:
- dependency-name: json
  dependency-version: 2.19.1
  dependency-type: direct:production
...

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