Bump rxjava from 3.1.5 to 3.1.6

Bumps [rxjava](https://github.com/ReactiveX/RxJava) from 3.1.5 to 3.1.6.
- [Release notes](https://github.com/ReactiveX/RxJava/releases)
- [Commits](ReactiveX/RxJava@v3.1.5...v3.1.6)

---
updated-dependencies:
- dependency-name: io.reactivex.rxjava3:rxjava
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -62,7 +62,7 @@
         <version.awaitility>4.2.0</version.awaitility>
         <version.junit-jupiter>5.9.2</version.junit-jupiter>
         <version.mutiny>1.8.0</version.mutiny>
-        <version.rxjava3>3.1.5</version.rxjava3>
+        <version.rxjava3>3.1.6</version.rxjava3>
         <version.testng>6.14.3</version.testng>
         <version.weld-api>3.1.SP4</version.weld-api>
         <version.weld-core>3.1.8.Final</version.weld-core>