Bump opentelemetry-bom from 1.27.0 to 1.28.0 (#12703)

Bumps [opentelemetry-bom](https://github.com/open-telemetry/opentelemetry-java) from 1.27.0 to 1.28.0.
- [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@v1.27.0...v1.28.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

dubbo-spring-boot/dubbo-spring-boot-starters/observability/pom.xml

@@ -40,7 +40,7 @@
     <properties>
         <micrometer.version>1.11.1</micrometer.version>
         <micrometer-tracing.version>1.1.2</micrometer-tracing.version>
-        <opentelemetry.version>1.27.0</opentelemetry.version>
+        <opentelemetry.version>1.28.0</opentelemetry.version>
         <zipkin-reporter.version>2.16.4</zipkin-reporter.version>
         <prometheus-client.version>0.16.0</prometheus-client.version>
     </properties>