Bump rxjava from 3.0.8 to 3.0.9

Bumps [rxjava](https://github.com/ReactiveX/RxJava) from 3.0.8 to 3.0.9.
- [Release notes](https://github.com/ReactiveX/RxJava/releases)
- [Commits](ReactiveX/RxJava@v3.0.8...v3.0.9)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -83,7 +83,7 @@
         <wiremock.version>2.27.2</wiremock.version>
         <guava.version>30.1-jre</guava.version>
         <testcontainers.version>1.15.1</testcontainers.version>
-        <rxjava.version>3.0.8</rxjava.version>
+        <rxjava.version>3.0.9</rxjava.version>
     </properties>
 
     <dependencyManagement>