fix(deps): update dependency io.reactivex.rxjava3:rxjava to v3.1.9

Author: renovate[bot]

elijah-congenial-robot/elijah-core/pom.xml

@@ -24,7 +24,7 @@
 		<dependency>
 			<groupId>io.reactivex.rxjava3</groupId>
 			<artifactId>rxjava</artifactId>
-			<version>3.1.6</version>
+			<version>3.1.9</version>
 		</dependency>
 
 		<!-- https://mvnrepository.com/artifact/org.reactivestreams/reactive-streams -->