Fix reactor <-> OTel test

Author: mcculls

dd-java-agent/instrumentation/reactor-core-3.1/build.gradle

@@ -17,6 +17,7 @@ dependencies {
 
   testImplementation project(':dd-java-agent:instrumentation:datadog:tracing:trace-annotation')
   testImplementation project(':dd-java-agent:instrumentation:reactive-streams-1.0')
+  testImplementation project(path: ':dd-java-agent:agent-otel:otel-bootstrap', configuration: 'shadow')
   testImplementation project(':dd-java-agent:instrumentation:opentelemetry:opentelemetry-1.4')
   testImplementation project(':dd-java-agent:instrumentation:opentelemetry:opentelemetry-annotations-1.20')
   testImplementation project (':dd-java-agent:instrumentation:opentracing:opentracing-0.32')