Update to Otel version 2.15.0

[ezhang6811]

Description of changes:

------------------------------------------------------------
:dependencyManagement Project Dependency Updates (report to plain text file)
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The following dependencies are using the latest release version:
 - com.sparkjava:spark-core:2.9.4
 - com.squareup.okhttp3:okhttp:4.12.0
 - io.opentelemetry:opentelemetry-extension-aws:1.20.1

The following dependencies have later release versions:
 - com.amazonaws:aws-java-sdk-bom [1.12.599 -> 1.12.782]
     https://aws.amazon.com/sdkforjava
 - com.fasterxml.jackson:jackson-bom [2.16.0 -> 2.19.0]
     https://github.com/FasterXML/jackson-bom
 - com.github.ben-manes.versions:com.github.ben-manes.versions.gradle.plugin [0.50.0 -> 0.52.0]
 - com.google.guava:guava-bom [33.0.0-jre -> 33.4.8-jre]
     https://github.com/google/guava
 - com.google.protobuf:protobuf-bom [3.25.1 -> 4.30.2]
     https://developers.google.com/protocol-buffers/
 - com.linecorp.armeria:armeria-bom [1.26.4 -> 1.32.5]
     https://armeria.dev/
 - commons-logging:commons-logging [1.2 -> 1.3.5]
     https://commons.apache.org/proper/commons-logging/
 - io.grpc:grpc-bom [1.59.1 -> 1.72.0]
     https://github.com/grpc/grpc-java
 - io.opentelemetry.contrib:opentelemetry-aws-resources [1.39.0-alpha -> 1.46.0-alpha]
     https://github.com/open-telemetry/opentelemetry-java-contrib
 - io.opentelemetry.contrib:opentelemetry-aws-xray [1.39.0 -> 1.46.0]
     https://github.com/open-telemetry/opentelemetry-java-contrib
 - io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha [2.10.0-adot2-alpha -> 2.15.0-alpha]
     https://github.com/open-telemetry/opentelemetry-java-instrumentation
 - io.opentelemetry.javaagent:opentelemetry-javaagent [2.10.0-adot2 -> 2.15.0]
     https://github.com/open-telemetry/opentelemetry-java-instrumentation
 - io.opentelemetry.proto:opentelemetry-proto [1.0.0-alpha -> 1.5.0-alpha]
     https://github.com/open-telemetry/opentelemetry-proto-java
 - net.bytebuddy:byte-buddy [1.14.10 -> 1.17.5]
     https://bytebuddy.net
 - org.apache.logging.log4j:log4j-bom [2.21.1 -> 2.24.3]
     https://logging.apache.org/log4j/2.x/
 - org.assertj:assertj-core [3.24.2 -> 3.27.3]
     https://assertj.github.io/doc/#assertj-core
 - org.curioswitch.curiostack:protobuf-jackson [2.2.0 -> 2.7.0]
     https://github.com/curioswitch/protobuf-jackson
 - org.junit:junit-bom [5.10.1 -> 5.12.2]
     https://junit.org/junit5/
 - org.slf4j:slf4j-api [1.7.36 -> 2.0.17]
     http://www.slf4j.org
 - org.slf4j:slf4j-simple [1.7.36 -> 2.0.17]
     http://www.slf4j.org
 - org.springframework.boot:spring-boot-dependencies [2.7.17 -> 3.4.5]
     https://spring.io/projects/spring-boot
 - org.testcontainers:testcontainers-bom [1.19.3 -> 1.21.0]
     https://java.testcontainers.org
 - software.amazon.awssdk:bom [2.21.33 -> 2.31.33]
     https://aws.amazon.com/sdkforjava

Gradle release-candidate updates:
 - Gradle: [8.10 -> 8.14]

All dependencies were updated except spring-boot 3.4.5 which is only compatible with Java 17 or later.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.