Update dependencies on protocol-http*.

Author: ioquatix

async-http.gemspec

@@ -20,9 +20,9 @@ Gem::Specification.new do |spec|
 	spec.add_dependency "async", ">= 1.25"
 	spec.add_dependency "async-io", ">= 1.28"
 	spec.add_dependency "async-pool", ">= 0.2"
-	spec.add_dependency "protocol-http", "~> 0.23"
-	spec.add_dependency "protocol-http1", "~> 0.14.0"
-	spec.add_dependency "protocol-http2", "~> 0.14.0"
+	spec.add_dependency "protocol-http", "~> 0.24.0"
+	spec.add_dependency "protocol-http1", "~> 0.15.0"
+	spec.add_dependency "protocol-http2", "~> 0.15.0"
 	spec.add_dependency "traces", ">= 0.8.0"
 
 	spec.add_development_dependency "async-container", "~> 0.14"