Bump io.opentelemetry:opentelemetry-bom from 1.55.0 to 1.56.0

Bumps [io.opentelemetry:opentelemetry-bom](https://github.com/open-telemetry/opentelemetry-java) from 1.55.0 to 1.56.0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-java/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-java/blob/main/CHANGELOG.md)
- [Commits](open-telemetry/opentelemetry-java@v1.55.0...v1.56.0)

---
updated-dependencies:
- dependency-name: io.opentelemetry:opentelemetry-bom
  dependency-version: 1.56.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -36,7 +36,7 @@ jetty = "12.1.4"
 netty = "4.2.7.Final"
 rhino = "1.8.0"
 nimbus = "10.6"
-otel = "1.55.0"
+otel = "1.56.0"
 otel-instrumentation = "2.21.0-alpha"
 
 [libraries]