Upgrade ActiveSupport in QA

This matches the version we use in Rails

qa/Gemfile

 source 'https://rubygems.org'
 
 gem 'gitlab-qa'
-gem 'activesupport', '5.2.3' # This should stay in sync with the root's Gemfile
+gem 'activesupport', '6.0.2' # This should stay in sync with the root's Gemfile
 gem 'capybara', '~> 3.29.0'
 gem 'capybara-screenshot', '~> 1.0.23'
 gem 'rake', '~> 12.3.0'

qa/Gemfile.lock

 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.3)
+    activesupport (6.0.2)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
+      zeitwerk (~> 2.2)
     addressable (2.7.0)
       public_suffix (>= 2.0.2, < 5.0)
     airborne (0.2.13)
@@ -28,7 +29,7 @@ GEM
       launchy
     childprocess (3.0.0)
     coderay (1.1.2)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.1.6)
     debase (0.2.4.1)
       debase-ruby_core_source (>= 0.10.2)
     debase-ruby_core_source (0.10.6)
@@ -40,7 +41,7 @@ GEM
     gitlab-qa (4.0.0)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
-    i18n (1.6.0)
+    i18n (1.8.2)
       concurrent-ruby (~> 1.0)
     knapsack (1.17.1)
       rake
@@ -52,7 +53,7 @@ GEM
     mime-types-data (3.2016.0521)
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
-    minitest (5.11.3)
+    minitest (5.14.0)
     netrc (0.11.0)
     nokogiri (1.10.5)
       mini_portile2 (~> 2.4.0)
@@ -100,19 +101,20 @@ GEM
       rubyzip (>= 1.2.2)
     thread_safe (0.3.6)
     timecop (0.9.1)
-    tzinfo (1.2.5)
+    tzinfo (1.2.6)
       thread_safe (~> 0.1)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.4)
     xpath (3.2.0)
       nokogiri (~> 1.8)
+    zeitwerk (2.3.0)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  activesupport (= 5.2.3)
+  activesupport (= 6.0.2)
   airborne (~> 0.2.13)
   capybara (~> 3.29.0)
   capybara-screenshot (~> 1.0.23)