chore(main): release 1.9.1

[github-actions]

🤖 I have created a release beep boop

1.9.1 (2026-10-06)

Bug Fixes

• deps: update dependency com.github.ben-manes.caffeine:caffeine to v3.3.0 (#2493) (5bf31dc)
• deps: update dependency com.google.guava:guava to v33.7.2-jre (#2510) (78820b0)
• deps: update dependency io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha to v2.32.0-alpha (#2523) (933c38b)
• deps: update dependency io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha to v2.32.0-alpha (#2524) (d7c3286)
• deps: update jetty monorepo to v12.1.14 (#2527) (3fb8ccc)
• don't escape UTF-8 names by default for OpenMetrics 2.0 (#2519) (513a2d7)
• exclude non-release modules from Maven deployment (#2481) (f27baf4)
• mark tracer initializer OSGi import optional (#2528) (fc5d0ba)

Performance Improvements

• update otel benchmark dependencies, add otel bound instrument scenarios (#2451) (fd343a2)

---

Important

Close and reopen this PR to trigger CI checks.