fix missing android dependency download task

example/android/build.gradle

@@ -21,6 +21,18 @@ buildscript {
 }
 
 allprojects {
+    task downloadDependencies() {
+        description 'Download all dependencies to the Gradle cache'
+        doLast {
+          configurations.findAll().each { config ->
+            if (config.name.contains("minReactNative") && config.canBeResolved) {
+              print config.name
+              print '\n'
+              config.files
+            }
+          }
+        }
+      }
     repositories {
         mavenLocal()
         google()