chore(gemfile): update in line with Chef WS v25.13.7

Author: dafyddj

Gemfile

@@ -19,7 +19,7 @@ gem 'inspec', git: 'https://gitlab.com/saltstack-formulas/infrastructure/inspec'
 gem 'kitchen-docker', git: 'https://github.com/test-kitchen/kitchen-docker', ref: '511e4ad36856b9e2eccceb56603586e6cebd296a'
 # rubocop:enable Layout/LineLength
 
-gem 'kitchen-inspec', '3.0.0'
+gem 'kitchen-inspec', '3.1.0'
 gem 'kitchen-salt', '0.7.2'
 
 gem 'net-ssh', '7.3.0'