Bump yajl-ruby from 1.4.1 to 1.4.2

Bumps [yajl-ruby](https://github.com/brianmario/yajl-ruby) from 1.4.1 to 1.4.2.
- [Release notes](https://github.com/brianmario/yajl-ruby/releases)
- [Changelog](https://github.com/brianmario/yajl-ruby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/brianmario/yajl-ruby/commits)

---
updated-dependencies:
- dependency-name: yajl-ruby
  dependency-type: indirect
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -564,7 +564,7 @@ GEM
       nokogiri (~> 1.8)
     xray-rails (0.3.2)
       rails (>= 3.1.0)
-    yajl-ruby (1.4.1)
+    yajl-ruby (1.4.2)
 
 PLATFORMS
   x86_64-darwin-19