build: update rxjava

Change-Id: I8f432273ef3ab62a2ba4b8ba98a612ad9ee8de5c

jami-android/libjamiclient/build.gradle.kts

@@ -25,7 +25,7 @@ dependencies {
     // Required -- JUnit 4 framework
     testImplementation ("junit:junit:4.13.2")
     // RxJava
-    implementation ("io.reactivex.rxjava3:rxjava:3.1.7")
+    implementation ("io.reactivex.rxjava3:rxjava:3.1.8")
     // gson
     implementation ("com.google.code.gson:gson:2.10")
     api("com.google.dagger:dagger:$hilt_version")