Bump io.opentelemetry:opentelemetry-bom from 1.26.0 to 1.42.0

Bumps [io.opentelemetry:opentelemetry-bom](https://github.com/open-telemetry/opentelemetry-java) from 1.26.0 to 1.42.0.
- [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@v1.26.0...v1.42.0)

---
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]>

build.gradle

@@ -14,7 +14,7 @@ subprojects {
         targetCompatibility = JavaVersion.VERSION_1_8
     }
     ext {
-        otelVersion = '1.26.0'
+        otelVersion = '1.42.0'
         otelVersionAlpha = "${otelVersion}-alpha"
         javaSDKVersion = '1.25.1'
         jarVersion = '1.0.0'