Atualizar repositório maven

Trocar no build.gradle:
```
 maven {
        url "https://repository.springsource.com/maven/bundles/release"
    }
    maven {
        url "https://repository.springsource.com/maven/bundles/external"
    }
```
por:
```
maven {
      url "https://artifacts.camunda.com/artifactory/public/"
  }
```