Add dependency from alpha bom to stable bom (#6611)

bom-alpha/build.gradle.kts

@@ -15,6 +15,7 @@ val otelVersion: String by project
 dependencies {
   api(platform("io.opentelemetry:opentelemetry-bom:${otelVersion}"))
   api(platform("io.opentelemetry:opentelemetry-bom-alpha:${otelVersion}-alpha"))
+  api(platform(project(":bom")))
 }
 
 otelBom.projectFilter.set { it.findProperty("otel.stable") != "true" }