chore: Enable Ruby 3.4 CI builds

Author: jsonbailey

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
     uses: ./.github/workflows/build-gem.yml
     strategy:
       matrix:
-        version: ["3.2", "jruby-9.4"]
+        version: ["3.2", "3.4", "jruby-9.4"]
     with:
       version: ${{ matrix.version }}
 

launchdarkly-server-sdk.gemspec

@@ -21,6 +21,7 @@ Gem::Specification.new do |spec|
   spec.required_ruby_version = ">= 3.1.0"
 
   spec.add_development_dependency "aws-sdk-dynamodb", "~> 1.57"
+  spec.add_development_dependency "bigdecimal", "~> 3.1.1" # Neccessary for aws-sdk-dynamodb https://github.com/aws/aws-sdk-ruby/issues/3271
   spec.add_development_dependency "bundler", "~> 2.2", ">= 2.2.3"
   spec.add_development_dependency "connection_pool", "~> 2.3"
   spec.add_development_dependency "diplomat", "~> 2.6"