Upgrade to Reactor 2023.0.15

Closes gh-1127

Author: bclozel

platform/build.gradle

@@ -9,7 +9,7 @@ javaPlatform {
 dependencies {
 	api(platform("org.springframework:spring-framework-bom:${springFrameworkVersion}"))
 	api(platform("com.fasterxml.jackson:jackson-bom:2.17.2"))
-	api(platform("io.projectreactor:reactor-bom:2023.0.11"))
+	api(platform("io.projectreactor:reactor-bom:2023.0.15"))
 	api(platform("io.micrometer:micrometer-bom:1.13.6"))
 	api(platform("io.micrometer:micrometer-tracing-bom:1.3.5"))
 	api(platform("org.springframework.data:spring-data-bom:2024.0.5"))