Upgrade to Rxjava 1.3.2

Closes gh-10401

spring-boot-dependencies/pom.xml

@@ -151,7 +151,7 @@
 		<querydsl.version>4.1.4</querydsl.version>
 		<reactor-bom.version>Bismuth-RC1</reactor-bom.version>
 		<reactive-streams.version>1.0.1</reactive-streams.version>
-		<rxjava.version>1.3.1</rxjava.version>
+		<rxjava.version>1.3.2</rxjava.version>
 		<rxjava-adapter.version>1.2.1</rxjava-adapter.version>
 		<rxjava2.version>2.1.3</rxjava2.version>
 		<selenium.version>3.5.3</selenium.version>