v3.10.0

What's Changed

• X-Ray segment Namespace omitempty by @dvictor in #3161
• Use proto optional fields for non required primitive object attributes. by @raphael in #3162
• Bump github.com/getkin/kin-openapi from 0.103.0 to 0.104.0 by @dependabot in #3163
• Fix issue with union validations by @raphael in #3164

Full Changelog: v3.9.1...v3.10.0