Update upstream agent to snapshot version

Author: laurit

dependencyManagement/build.gradle.kts

@@ -4,7 +4,7 @@ plugins {
 
 val otelVersion = "1.48.0"
 val otelAlphaVersion = otelVersion.replaceFirst("(-SNAPSHOT)?$".toRegex(), "-alpha$1")
-val otelInstrumentationVersion = "2.14.0"
+val otelInstrumentationVersion = "2.15.0-SNAPSHOT"
 val otelInstrumentationAlphaVersion =  otelInstrumentationVersion.replaceFirst("(-SNAPSHOT)?$".toRegex(), "-alpha$1")
 val otelContribAlphaVersion = "1.45.0-alpha"
 

licenses/licenses.md

@@ -1,7 +1,7 @@
 
 # splunk-otel-javaagent
 ## Dependency License Report
-_2025-03-18 17:03:50 EET_
+_2025-03-29 16:16:09 EET_
 ## Apache License, Version 2.0
 
 **1** **Group:** `com.squareup.okhttp3` **Name:** `okhttp` **Version:** `4.12.0` 
@@ -73,7 +73,7 @@ _2025-03-18 17:03:50 EET_
 > - **POM Project URL**: [https://github.com/open-telemetry/opentelemetry-java-contrib](https://github.com/open-telemetry/opentelemetry-java-contrib)
 > - **POM License**: Apache License, Version 2.0 - [https://www.apache.org/licenses/LICENSE-2.0](https://www.apache.org/licenses/LICENSE-2.0)
 
-**18** **Group:** `io.opentelemetry.instrumentation` **Name:** `opentelemetry-instrumentation-bom-alpha` **Version:** `2.14.0-alpha` 
+**18** **Group:** `io.opentelemetry.instrumentation` **Name:** `opentelemetry-instrumentation-bom-alpha` **Version:** `2.15.0-alpha-SNAPSHOT` 
 > - **POM Project URL**: [https://github.com/open-telemetry/opentelemetry-java-instrumentation](https://github.com/open-telemetry/opentelemetry-java-instrumentation)
 > - **POM License**: Apache License, Version 2.0 - [https://www.apache.org/licenses/LICENSE-2.0](https://www.apache.org/licenses/LICENSE-2.0)