Merge pull request #1182 from reactjs/dependabot/bundler/rack-2.2.3.1

Bump rack from 2.2.3 to 2.2.3.1

Author: justin808

Gemfile.lock

@@ -162,7 +162,7 @@ GEM
       pry (~> 0.10)
     public_suffix (4.0.6)
     racc (1.6.0)
-    rack (2.2.3)
+    rack (2.2.3.1)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (6.0.2.1)