Go-SDK - 2.5.0

• [FSSDK-12369] Add local holdouts support to Go SDK by @Mat001 in https://github.com/optimizely/go-sdk/pull/451
• [FSSDK-12670] Block ODP identify events with single identifier by @jaeopt in https://github.com/optimizely/go-sdk/pull/452
• [FSSDK-12760] Add localHoldouts to datafile for backward compatibility by @jaeopt in https://github.com/optimizely/go-sdk/pull/453
• [FSSDK-12813] Normalize decision event campaign_id, variation_id, and entity_id by @jaeopt in https://github.com/optimizely/go-sdk/pull/455
• [FSSDK-12750] Use attribute ID instead of key for CMAB prediction requests by @raju-opti in https://github.com/optimizely/go-sdk/pull/456

Full Changelog: https://github.com/optimizely/go-sdk/compare/v2.4.0...v2.5.0