What's Changed

• refactor(http/prom): request::NewRecordBodyData is metrics agnostic by @cratelyn in #4174
• chore(http/prom): body_data exports BodyDataMetrics by @cratelyn in #4186
• refactor(app/inbound): rename ExtractResponseBodyDataMetrics by @cratelyn in #4187
• refactor(app/inbound): qualified body metrics imports by @cratelyn in #4188
• refactor(app/inbound): type aliases specify extractors by @cratelyn in #4189
• build(deps): bump libloading from 0.8.8 to 0.8.9 by @dependabot[bot] in #4183
• build(deps): bump tempfile from 3.21.0 to 3.23.0 by @dependabot[bot] in #4185
• build(deps): bump semver from 1.0.26 to 1.0.27 by @dependabot[bot] in #4184
• build(deps): bump serde_json from 1.0.143 to 1.0.145 in the serde group by @dependabot[bot] in #4182
• feat(app/core): add Layers::into_inner() by @cratelyn in #4192
• feat(app/inbound): request body frame size metrics by @cratelyn in #4180
• refactor(app/outbound): remove frivolous NewService<T> bounds by @cratelyn in #4190
• fix(tracing): Flush spans on interval instead of idle timeout by @sfleen in #4197
• build(deps): bump the serde group with 3 updates by @dependabot[bot] in #4194
• build(deps): bump unicode-ident from 1.0.18 to 1.0.19 by @dependabot[bot] in #4196
• build(deps): bump cpp_demangle from 0.4.4 to 0.4.5 by @dependabot[bot] in #4195
• build(deps): bump libc from 0.2.175 to 0.2.176 by @dependabot[bot] in #4200
• refactor(app/inbound): consolidate route label encoding by @cratelyn in #4198
• build(deps): bump regex from 1.11.2 to 1.11.3 by @dependabot[bot] in #4201

Full Changelog: release/v2.320.0...release/v2.321.0