[Release 1.0.0-RC1] Update version (#472)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: onobc

gradle.properties

@@ -1,4 +1,4 @@
-version=1.0.0-SNAPSHOT
+version=1.0.0-RC1
 
 org.gradle.caching=true
 org.gradle.parallel=true
@@ -12,6 +12,6 @@ springFrameworkVersion=6.1.0-RC1
 springBootVersion=3.2.0-SNAPSHOT
 
 # only used for docs (links)
-springBootVersionForDocs=3.2.0-SNAPSHOT
+springBootVersionForDocs=3.2.0-RC1
 
 springCloudStreamVersion=4.1.0-SNAPSHOT