Revert "Bump yajl-ruby from 1.4.1 to 1.4.2 (#300)" (#301)

This reverts commit 758acdc.

Author: nlin21

Gemfile.lock

@@ -265,7 +265,7 @@ GEM
       unf_ext
     unf_ext (0.0.7.7)
     unicode-display_width (1.7.0)
-    yajl-ruby (1.4.2)
+    yajl-ruby (1.4.1)
     yell (2.2.2)
     zeitwerk (2.4.2)