Update dependency rack to v2.2.13 [SECURITY]

Author: renovate[bot]

Gemfile

@@ -16,7 +16,7 @@ gem 'loog', '0.2.1'
 gem 'minitest', '5.16.3', require: false
 gem 'minitest-reporters', '1.5.0', require: false
 gem 'pgtk', '0.7.5'
-gem 'rack', '2.1.4.1'
+gem 'rack', '2.2.13'
 gem 'rack-ssl', '1.4.1'
 gem 'rack-test', '1.1.0'
 gem 'rake', '12.3.3', require: false

Gemfile.lock

@@ -119,7 +119,7 @@ GEM
     plist (3.1.0)
     powerpack (0.1.3)
     racc (1.7.1)
-    rack (2.1.4.1)
+    rack (2.2.13)
     rack-protection (2.0.4)
       rack
     rack-ssl (1.4.1)
@@ -174,6 +174,11 @@ GEM
       rainbow (>= 2.2.2, < 4.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.4.0)
+    rubocop-minitest (0.0.1)
+    rubocop-performance (1.0.0)
+      rubocop (>= 0.58.0)
+    rubocop-rake (0.5.1)
+      rubocop
     rubocop-rspec (1.30.1)
       rubocop (>= 0.60.0)
     ruby-progressbar (1.13.0)
@@ -297,7 +302,7 @@ DEPENDENCIES
   minitest (= 5.16.3)
   minitest-reporters (= 1.5.0)
   pgtk (= 0.7.5)
-  rack (= 2.1.4.1)
+  rack (= 2.2.13)
   rack-ssl (= 1.4.1)
   rack-test (= 1.1.0)
   rake (= 12.3.3)
@@ -306,6 +311,9 @@ DEPENDENCIES
   rerun (= 0.13.1)
   rspec-rails (= 3.8.1)
   rubocop (= 0.62.0)
+  rubocop-minitest (> 0)
+  rubocop-performance (> 0)
+  rubocop-rake (> 0)
   rubocop-rspec (= 1.30.1)
   sass (= 3.7.2)
   sentry-raven (= 2.7.4)