gemspec_compatible in truemail-3.0.2

- old
+ new

@@ -34,9 +34,9 @@
   spec.add_development_dependency 'dns_mock', '~> 1.5', '>= 1.5.5'
   spec.add_development_dependency 'ffaker', '~> 2.21'
   spec.add_development_dependency 'json_matchers', '~> 0.11.1'
   spec.add_development_dependency 'rake', '~> 13.0', '>= 13.0.6'
   spec.add_development_dependency 'rspec', '~> 3.12'
-  spec.add_development_dependency 'smtp_mock', '~> 1.2', '>= 1.2.2'
+  spec.add_development_dependency 'smtp_mock', '~> 1.3'
   spec.add_development_dependency 'truemail-rspec', '~> 1.0'
   spec.add_development_dependency 'webmock', '~> 3.18', '>= 3.18.1'
 end