[release] Prepare and release 1.2.0-RC1

Author: violetagg

build.gradle

@@ -85,9 +85,9 @@ ext {
 	}
 
 	//Metrics
-	micrometerVersion = '1.14.0-SNAPSHOT' //optional baseline
-	micrometerTracingVersion = '1.4.0-SNAPSHOT' //optional baseline
-	micrometerDocsVersion = '1.0.2' //optional baseline
+	micrometerVersion = '1.14.0-RC1' //optional baseline
+	micrometerTracingVersion = '1.4.0-RC1' //optional baseline
+	micrometerDocsVersion = '1.0.4' //optional baseline
 
 	contextPropagationDefaultVersion = '1.1.0' //optional baseline
 	if (!project.hasProperty("forceContextPropagationVersion")) {