Bump third_party/jsoncpp/repo from ca98c98 to b511d9e (project-chip#41997)

Bumps [third_party/jsoncpp/repo](https://github.com/open-source-parsers/jsoncpp) from `ca98c98` to `b511d9e`.
- [Release notes](https://github.com/open-source-parsers/jsoncpp/releases)
- [Commits](open-source-parsers/jsoncpp@ca98c98...b511d9e)

---
updated-dependencies:
- dependency-name: third_party/jsoncpp/repo
  dependency-version: b511d9e64956db998b74909df112ac8c8f41d6ff
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Andrei Litvin <[email protected]>

Author: dependabot[bot]