Expand constraint on Faraday gem to allow for version 0.17.3

Author: hatch-carl

rabbitmq_http_api_client.gemspec

@@ -20,6 +20,6 @@ Gem::Specification.new do |gem|
 
   gem.add_dependency    "hashie",             "~> 3.5"
   gem.add_dependency    "multi_json",         "~> 1.12"
-  gem.add_dependency    "faraday",            "~> 0.15.0"
-  gem.add_dependency    "faraday_middleware", "~> 0.13.0"
+  gem.add_dependency    "faraday",            [">= 0.15", "< 1"]
+  gem.add_dependency    "faraday_middleware", [">= 0.13.0", "< 1"]
 end