Bump rxjava from 2.2.9 to 2.2.10 (#32)

Bumps [rxjava](https://github.com/ReactiveX/RxJava) from 2.2.9 to 2.2.10.
- [Release notes](https://github.com/ReactiveX/RxJava/releases)
- [Changelog](https://github.com/ReactiveX/RxJava/blob/2.x/CHANGES.md)
- [Commits](ReactiveX/RxJava@v2.2.9...v2.2.10)

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

Author: dependabot-preview[bot]

build.gradle

@@ -50,7 +50,7 @@ dependencies {
 
     compile "org.reactivestreams:reactive-streams:1.0.2"
     compile "io.reactivex:rxjava:1.3.8"
-    compile "io.reactivex.rxjava2:rxjava:2.2.9"
+    compile "io.reactivex.rxjava2:rxjava:2.2.10"
 
     testCompile group: 'junit', name: 'junit', version: '4.12'
     testCompile 'org.mockito:mockito-core:2.28.2'