v2.9.1

See CHANGELOG for details.

What's Changed

• test: add pytest-benchmark suite for Core API and GraphQL modes by @allmonday in #67
• perf(resolver): cache traversable fields per type by @allmonday in #68
• fix(security): restrict Voyager import to service modules by @allmonday in #69
• perf(graphql): cache relationship lookup in _serialize_item by @allmonday in #73
• perf: _orm_to_dto cached fields + remove _serialize_entity wrapper by @allmonday in #75

Full Changelog: v2.9.0...v2.9.1