CI fix

Attempt to fix this error

* What went wrong:
Execution failed for task ':app:processDebugAndroidTestManifest'.
> Could not resolve all files for configuration ':app:debugAndroidTestRuntimeClasspath'.
   > Could not download kappuccino-1.2.1.aar (br.com.concretesolutions:kappuccino:1.2.1)
      > Could not get resource 'https://jcenter.bintray.com/br/com/concretesolutions/kappuccino/1.2.1/kappuccino-1.2.1.aar'.
         > Could not GET 'https://jcenter.bintray.com/br/com/concretesolutions/kappuccino/1.2.1/kappuccino-1.2.1.aar'.
            > Connection reset

Author: “Akshay

app/build.gradle

@@ -3,6 +3,10 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 apply plugin: 'jacoco'
 
+repositories {
+    mavenCentral()
+}
+
 android {
     compileSdkVersion 29
     buildToolsVersion '29.0.3'