Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha (#373)

Bumps [io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha](https://github.com/open-telemetry/opentelemetry-java-instrumentation) from 2.12.0-alpha to 2.13.3-alpha.
- [Release notes](https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/CHANGELOG.md)
- [Commits](https://github.com/open-telemetry/opentelemetry-java-instrumentation/commits)

---
updated-dependencies:
- dependency-name: io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha
  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]

java/build.gradle

@@ -9,7 +9,7 @@ description = "Splunk distribution of OpenTelemetry Lambda"
 ext {
     versions = [
             opentelemetry: '2.0.0',
-            opentelemetryalpha: '2.12.0-alpha'
+            opentelemetryalpha: '2.13.3-alpha'
     ]
 }