Restrict dependency versions upper bound

Author: mcelicalderon

graphql_devise.gemspec

@@ -25,9 +25,9 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 2.2.0'
 
-  spec.add_dependency 'devise_token_auth', '>= 0.1.43'
-  spec.add_dependency 'graphql', '>= 1.8'
-  spec.add_dependency 'rails', '>= 4.2'
+  spec.add_dependency 'devise_token_auth', '>= 0.1.43', '< 2.0'
+  spec.add_dependency 'graphql', '>= 1.8', '< 1.11.0'
+  spec.add_dependency 'rails', '>= 4.2', '< 6.2'
 
   spec.add_development_dependency 'appraisal'
   spec.add_development_dependency 'coveralls'