Ruby-SDK - v5.3.0

• [AI-FSSDK] [FSSDK-12337] Add Feature Rollout support by @FarhanAnjum-opti in https://github.com/optimizely/ruby-sdk/pull/392

• [FSSDK-12034] Update: Exclude CMAB from UserProfileService by @FarhanAnjum-opti in https://github.com/optimizely/ruby-sdk/pull/384
• [FSSDK-12150] [Ruby] Add Event Retries by @esrakartalOpt in https://github.com/optimizely/ruby-sdk/pull/385
• [FSSDK-12318] Arnica code risk findings for Ruby SDK by @esrakartalOpt in https://github.com/optimizely/ruby-sdk/pull/391
• [AI-FSSDK] [FSSDK-12418] Remove experiment type validation from config parsing by @FarhanAnjum-opti in https://github.com/optimizely/ruby-sdk/pull/393
• [AI-FSSDK] [FSSDK-12368] Remove legacy flag-level holdout fields by @Mat001 in https://github.com/optimizely/ruby-sdk/pull/395

• [AI-FSSDK] prepare for release ruby-sdk v5.3.0 by @jaeopt in https://github.com/optimizely/ruby-sdk/pull/396

Full Changelog: https://github.com/optimizely/ruby-sdk/compare/v5.2.1...v5.3.0