Bump json from 2.6.2 to 2.6.3 (#256)

Bumps [json](https://github.com/flori/json) from 2.6.2 to 2.6.3.
- [Release notes](https://github.com/flori/json/releases)
- [Changelog](https://github.com/flori/json/blob/master/CHANGES.md)
- [Commits](ruby/json@v2.6.2...v2.6.3)

---
updated-dependencies:
- dependency-name: json
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

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

Gemfile.lock

@@ -16,7 +16,7 @@ GEM
     i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     iniparse (1.5.0)
-    json (2.6.2)
+    json (2.6.3)
     overcommit (0.59.1)
       childprocess (>= 0.6.3, < 5)
       iniparse (~> 1.4)