v2.256.0

What's Changed

• chore(app): add impl banner comments by @cratelyn in #3231
• docs(http/prom): Add metadata to Cargo.toml manifest by @cratelyn in #3230
• docs(integration): Document test environment interfaces by @cratelyn in #3229
• docs(http/prom): Fix broken doc links by @cratelyn in #3232
• build(deps): bump the opentelemetry group with 2 updates by @dependabot in #3225
• tls: add DetectSni middleware by @zaharidichev in #3199
• build(deps): bump actions/checkout from 4.1.7 to 4.2.0 by @dependabot in #3235
• build(deps): bump async-trait from 0.1.82 to 0.1.83 by @dependabot in #3233
• Integrate OpenTelemetry into the proxy by @sfleen in #3221
• build(deps): bump flate2 from 1.0.33 to 1.0.34 by @dependabot in #3236
• Allow configuring proxy trace exporter service name by @sfleen in #3245
• build(deps): bump cc from 1.1.21 to 1.1.24 by @dependabot in #3244
• build(deps): bump autocfg from 1.3.0 to 1.4.0 by @dependabot in #3237

Full Changelog: release/v2.255.0...release/v2.256.0