Integrate jsonlint for json files on CI

What does this MR do?

yamllint was integrated in .gitlab/ci/yaml.gitlab-ci.yml already, there are currently 180+ json files in this repository and could be more in the future, it's worth to add a linter for it to make sure the syntax of json files are always valid, in case of any breaking from them.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry for user-facing changes, or community contribution. Check the link for other scenarios.
• Documentation created/updated or follow-up review issue created
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Community contribution Quality ~backstage ci-build