chore(deps): update dependency inspec to v6

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Gemfile

@@ -10,7 +10,7 @@ group :test do
 end
 
 group :integration do
-  gem 'inspec', '~> 5'
+  gem 'inspec', '~> 6'
   gem 'kitchen-inspec'
   gem 'kitchen-vagrant'
   gem 'test-kitchen'