fix: Bump eventsource to 2.2.6 (#331)

Author: keelerm84

launchdarkly-server-sdk.gemspec

@@ -37,7 +37,7 @@ Gem::Specification.new do |spec|
 
   spec.add_runtime_dependency "benchmark", "~> 0.1", ">= 0.1.1"
   spec.add_runtime_dependency "concurrent-ruby", "~> 1.1"
-  spec.add_runtime_dependency "ld-eventsource", "2.2.5"
+  spec.add_runtime_dependency "ld-eventsource", "2.2.6"
   spec.add_runtime_dependency "observer", "~> 0.1.2"
   spec.add_runtime_dependency "semantic", "~> 1.6"
   spec.add_runtime_dependency "zlib", "~> 3.1" unless RUBY_PLATFORM == "java"