Upgrade to Rsocket 1.0.0-RC2

Closes gh-17800

spring-boot-project/spring-boot-dependencies/pom.xml

@@ -168,7 +168,7 @@
 		<reactor-bom.version>Dysprosium-M3</reactor-bom.version>
 		<rest-assured.version>3.3.0</rest-assured.version>
 		<reactive-streams.version>1.0.2</reactive-streams.version>
-		<rsocket.version>0.12.2-RC4</rsocket.version>
+		<rsocket.version>1.0.0-RC2</rsocket.version>
 		<rxjava.version>1.3.8</rxjava.version>
 		<rxjava-adapter.version>1.2.1</rxjava-adapter.version>
 		<rxjava2.version>2.2.11</rxjava2.version>