refactor: Bump json from 2.15.2 to 2.15.2.1 (#1879)

Author: dependabot[bot]

Gemfile.lock

@@ -93,7 +93,7 @@ GEM
       sassc (~> 2.1)
       sqlite3 (~> 1.3)
       xcinvoke (~> 0.3.0)
-    json (2.15.2)
+    json (2.15.2.1)
     liferaft (0.0.6)
     logger (1.7.0)
     minitest (5.27.0)