Update dependency rack to v3.2.4

Author: renovate[bot]

Gemfile

@@ -13,7 +13,7 @@ gem 'loog', '~>0.5'
 gem 'minitest', '~>5.25', require: false
 gem 'minitest-reporters', '~>1.7', require: false
 gem 'pgtk', '~>0.9'
-gem 'rack', '3.2.3'
+gem 'rack', '3.2.4'
 gem 'rack-ssl', '~>1.4'
 gem 'rack-test', '~>2.1'
 gem 'rake', '~>13.2', require: false

Gemfile.lock

@@ -165,7 +165,7 @@ GEM
       loog (> 0)
       tago (> 0)
     racc (1.8.1)
-    rack (3.2.3)
+    rack (3.2.4)
     rack-protection (4.2.1)
       base64 (>= 0.1.0)
       logger (>= 1.6.0)
@@ -341,7 +341,7 @@ DEPENDENCIES
   minitest (~> 5.25)
   minitest-reporters (~> 1.7)
   pgtk (~> 0.9)
-  rack (= 3.2.3)
+  rack (= 3.2.4)
   rack-ssl (~> 1.4)
   rack-test (~> 2.1)
   rake (~> 13.2)