Upgrade to RSocket 1.1 RC1

See gh-25898

Author: rstoyanchev

build.gradle

@@ -29,7 +29,7 @@ configure(allprojects) { project ->
 			mavenBom "io.netty:netty-bom:4.1.52.Final"
 			mavenBom "io.projectreactor:reactor-bom:2020.0.0-RC2"
 			mavenBom "io.r2dbc:r2dbc-bom:Arabba-SR7"
-			mavenBom "io.rsocket:rsocket-bom:1.1.0-M2"
+			mavenBom "io.rsocket:rsocket-bom:1.1.0-RC1"
 			mavenBom "org.eclipse.jetty:jetty-bom:9.4.32.v20200930"
 			mavenBom "org.jetbrains.kotlin:kotlin-bom:1.4.10"
 			mavenBom "org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.3.9"