Upgrade to RxJava2 2.2.18

wilkinsona · wilkinsona · commit 2620be1e0f00 · 2020-03-10T15:38:47.000Z
Closes gh-20464
diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -1422,7 +1422,7 @@ bom {
 			]
 		}
 	}
-	library("RxJava2", "2.2.17") {
+	library("RxJava2", "2.2.18") {
 		group("io.reactivex.rxjava2") {
 			modules = [
 				"rxjava"
