Bump io.opentelemetry:opentelemetry-bom from 1.39.0 to 1.40.0

Bumps [io.opentelemetry:opentelemetry-bom](https://github.com/open-telemetry/opentelemetry-java) from 1.39.0 to 1.40.0.
- [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@v1.39.0...v1.40.0)

---
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]>

pom.xml

@@ -104,7 +104,7 @@
     <io.opentelemetry.api.logs.version>1.26.0-alpha</io.opentelemetry.api.logs.version>
     <io.opentelemetry.sdk.logs.version>1.39.0</io.opentelemetry.sdk.logs.version>
     <io.opentelemetry.semconv.version>1.30.1-alpha</io.opentelemetry.semconv.version>
-    <io.opentelemetry.version>1.39.0</io.opentelemetry.version>
+    <io.opentelemetry.version>1.40.0</io.opentelemetry.version>
     <jakarta.activation-api.version>2.1.3</jakarta.activation-api.version>
     <jakarta.mail.version>2.1.3</jakarta.mail.version>
     <net.bytebuddy.version>1.14.17</net.bytebuddy.version>