Upgrade to Reactor 2025.0.0-M1

Closes gh-34577

Author: jhoeller

framework-platform/framework-platform.gradle

@@ -10,7 +10,7 @@ dependencies {
 	api(platform("com.fasterxml.jackson:jackson-bom:2.18.3"))
 	api(platform("io.micrometer:micrometer-bom:1.14.5"))
 	api(platform("io.netty:netty-bom:4.1.119.Final"))
-	api(platform("io.projectreactor:reactor-bom:2024.0.4"))
+	api(platform("io.projectreactor:reactor-bom:2025.0.0-M1"))
 	api(platform("io.rsocket:rsocket-bom:1.1.5"))
 	api(platform("org.apache.groovy:groovy-bom:4.0.26"))
 	api(platform("org.apache.logging.log4j:log4j-bom:3.0.0-beta3"))
@@ -136,6 +136,7 @@ dependencies {
 		api("org.ogce:xpp3:1.1.6")
 		api("org.python:jython-standalone:2.7.4")
 		api("org.quartz-scheduler:quartz:2.3.2")
+		api("org.reactivestreams:reactive-streams:1.0.4")
 		api("org.seleniumhq.selenium:htmlunit3-driver:4.29.0")
 		api("org.seleniumhq.selenium:selenium-java:4.29.0")
 		api("org.skyscreamer:jsonassert:2.0-rc1")