Update `rack-timeout` to `0.5.2`

This moves `rack-timeout` to be required
gems, as there's code requiring usage
of `Rack::Timeout`

Gemfile

@@ -164,6 +164,7 @@ gem 'diff_match_patch', '~> 0.1.0'
 
 # Application server
 gem 'rack', '~> 2.0.9'
+gem 'rack-timeout', '~> 0.5.1'
 
 group :unicorn do
   gem 'unicorn', '~> 5.5'
@@ -173,7 +174,6 @@ end
 group :puma do
   gem 'gitlab-puma', '~> 4.3.3.gitlab.2', require: false
   gem 'gitlab-puma_worker_killer', '~> 0.1.1.gitlab.1', require: false
-  gem 'rack-timeout', require: false
 end
 
 # State machine

Gemfile.lock

@@ -817,7 +817,7 @@ GEM
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
-    rack-timeout (0.5.1)
+    rack-timeout (0.5.2)
     rails (6.0.3.1)
       actioncable (= 6.0.3.1)
       actionmailbox (= 6.0.3.1)
@@ -1350,7 +1350,7 @@ DEPENDENCIES
   rack-cors (~> 1.0.6)
   rack-oauth2 (~> 1.9.3)
   rack-proxy (~> 0.6.0)
-  rack-timeout
+  rack-timeout (~> 0.5.1)
   rails (~> 6.0.3.1)
   rails-controller-testing
   rails-i18n (~> 6.0)

changelogs/unreleased/update-rack-timeout.yml

+---
+title: Update `rack-timeout` to `0.5.2`
+merge_request: 36071
+author:
+type: changed