Use RSocket BOM

See gh-23698

build.gradle

@@ -46,6 +46,7 @@ configure(allprojects) { project ->
 			mavenBom "com.fasterxml.jackson:jackson-bom:2.10.0"
 			mavenBom "io.netty:netty-bom:4.1.39.Final"
 			mavenBom "io.projectreactor:reactor-bom:Dysprosium-RELEASE"
+			mavenBom "io.rsocket:rsocket-bom:1.0.0-RC5"
 			mavenBom "org.eclipse.jetty:jetty-bom:9.4.20.v20190813"
 			mavenBom "org.jetbrains.kotlin:kotlin-bom:1.3.50"
 			mavenBom "org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.3.2"
@@ -78,10 +79,6 @@ configure(allprojects) { project ->
 			dependency "io.reactivex:rxjava:1.3.8"
 			dependency "io.reactivex:rxjava-reactive-streams:1.2.1"
 			dependency "io.reactivex.rxjava2:rxjava:2.2.12"
-			dependencySet(group: 'io.rsocket', version: '1.0.0-RC5') {
-				entry 'rsocket-core'
-				entry 'rsocket-transport-netty'
-			}
 
 			dependency "com.caucho:hessian:4.0.62"
 			dependency "com.fasterxml:aalto-xml:1.2.2"
@@ -299,7 +296,6 @@ configure(allprojects) { project ->
 		repositories {
 			mavenCentral()
 			maven { url "https://repo.spring.io/libs-spring-framework-build" }
-			maven { url "https://repo.spring.io/milestone" } // for RSocket
 		}
 	}
 	configurations.all {