Upgrade to RxJava2 2.2.21

wilkinsona · wilkinsona · commit 6ce61c504dbf · 2021-02-17T15:04:20.000Z
Closes gh-25336
diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -1474,7 +1474,7 @@ bom {
 			]
 		}
 	}
-	library("RxJava2", "2.2.20") {
+	library("RxJava2", "2.2.21") {
 		group("io.reactivex.rxjava2") {
 			modules = [
 				"rxjava"
