Update qa/Gemfile for activesupport 6.1.4.6

This also updates the Gemfile.lock to contain the rainbow gem,
which was added to Gemfile earlier.

qa/Gemfile

@@ -3,7 +3,7 @@
 source 'https://rubygems.org'
 
 gem 'gitlab-qa', require: 'gitlab/qa'
-gem 'activesupport', '~> 6.1.4.1' # This should stay in sync with the root's Gemfile
+gem 'activesupport', '~> 6.1.4.6' # This should stay in sync with the root's Gemfile
 gem 'allure-rspec', '~> 2.15.0'
 gem 'capybara', '~> 3.35.0'
 gem 'capybara-screenshot', '~> 1.0.23'

qa/Gemfile.lock

@@ -2,7 +2,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     abstract_type (0.0.7)
-    activesupport (6.1.4.1)
+    activesupport (6.1.4.6)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
@@ -226,6 +226,7 @@ GEM
     rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
+    rainbow (3.0.0)
     rake (13.0.6)
     regexp_parser (2.1.1)
     representable (3.1.1)
@@ -321,7 +322,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  activesupport (~> 6.1.4.1)
+  activesupport (~> 6.1.4.6)
   airborne (~> 0.3.4)
   allure-rspec (~> 2.15.0)
   capybara (~> 3.35.0)
@@ -339,6 +340,7 @@ DEPENDENCIES
   parallel (~> 1.19)
   parallel_tests (~> 2.29)
   pry-byebug (~> 3.5.1)
+  rainbow (~> 3.0.0)
   rake (~> 13)
   rest-client (~> 2.1.0)
   rotp (~> 3.1.0)