oje eu estava tentando atualizar o com.google.gms: google-services para 4.2.0 da 4.1.0, pois é a versão mais recente erecomendad por firebase. Mas eu recebo este erro:

Could not find com.google.gms:google-services:4.2.0.
Searched in the following locations:
    https://jcenter.bintray.com/com/google/gms/google-services/4.2.0/google-services-4.2.0.pom
    https://jcenter.bintray.com/com/google/gms/google-services/4.2.0/google-services-4.2.0.jar
    https://dl.google.com/dl/android/maven2/com/google/gms/google-services/4.2.0/google-services-4.2.0.pom
    https://dl.google.com/dl/android/maven2/com/google/gms/google-services/4.2.0/google-services-4.2.0.jar
    https://maven.fabric.io/public/com/google/gms/google-services/4.2.0/google-services-4.2.0.pom
    https://maven.fabric.io/public/com/google/gms/google-services/4.2.0/google-services-4.2.0.jar
Required by:
    project :

E aqui está o gradle de construção do meu projeto:

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        jcenter()
        google()
        maven {
            url 'https://maven.fabric.io/public'
        }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'
        classpath 'com.google.gms:google-services:4.2.0'

        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.4'
        classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
        // These docs use an open ended version so that our plugin
        // can be updated quickly in response to Android tooling updates

        // We recommend changing it to the latest version from our changelog:
        // https://docs.fabric.io/android/changelog.html#fabric-gradle-plugin
        classpath 'io.fabric.tools:gradle:1.27.0'
    }
}

allprojects {
    repositories {
        jcenter()
        maven {
            url 'https://maven.google.com/'
        }
        google()
    }
}

ATUALIZAR

omo Doug Stevenson disse que a dependência está agora em funcionamento, basta usar o google () em seus repositório

Se você tiver algum problema com outros repositórios do Google (firebase, exoplayer), poderá acompanhar o andamento do problemaAqu.