Loosen dependency to bundler

Author: dmke

influxdb.gemspec

@@ -18,7 +18,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = ">= 2.2.0"
 
-  spec.add_development_dependency "bundler", "< 2"
+  spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rspec", "~> 3.6"
   spec.add_development_dependency "rubocop", "~> 0.61.1"