- gemspec: relax Bundler requirement

Author: palkan

parser.gemspec

@@ -29,7 +29,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency             'ast',       '~> 2.4.1'
   spec.add_dependency             'racc'
 
-  spec.add_development_dependency 'bundler',   '>= 1.15', '< 3.0.0'
+  spec.add_development_dependency 'bundler',   '>= 1.15'
   spec.add_development_dependency 'rake',      '~> 13.0.1'
   spec.add_development_dependency 'cliver',    '~> 0.3.2'