Merge branch 'sh-update-rack-proxy' into 'master'

Upgrade rack-proxy to v0.7.2

See merge request gitlab-org/gitlab!83241

Gemfile

@@ -285,7 +285,7 @@ gem 'fast_blank'
 gem 'gitlab-chronic', '~> 0.10.5'
 gem 'gitlab_chronic_duration', '~> 0.10.6.2'
 
-gem 'rack-proxy', '~> 0.6.0'
+gem 'rack-proxy', '~> 0.7.2'
 
 gem 'sassc-rails', '~> 2.1.0'
 gem 'autoprefixer-rails', '10.2.5.1'

Gemfile.lock

@@ -968,7 +968,7 @@ GEM
       httpclient
       json-jwt (>= 1.11.0)
       rack (>= 2.1.0)
-    rack-proxy (0.6.0)
+    rack-proxy (0.7.2)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -1605,7 +1605,7 @@ DEPENDENCIES
   rack-attack (~> 6.3.0)
   rack-cors (~> 1.0.6)
   rack-oauth2 (~> 1.16.0)
-  rack-proxy (~> 0.6.0)
+  rack-proxy (~> 0.7.2)
   rack-timeout (~> 0.5.1)
   rails (~> 6.1.4.6)
   rails-controller-testing