Add androidx.swiperefreshlayout to RNTester build.gradle

Summary:
Suggested fix from passy

Changelog: [General] [Fixed] RNTester instacrash from missing androidx dependency

Reviewed By: passy

Differential Revision: D19741935

fbshipit-source-id: 62e02169a92b7418471d2228a3d75ffffbe7a6a6

RNTester/android/app/build.gradle

@@ -166,6 +166,8 @@ dependencies {
     // Build React Native from source
     implementation project(':ReactAndroid')
 
+    implementation "androidx.swiperefreshlayout:swiperefreshlayout:1.0.0"
+
     def hermesPath = '$projectDir/../../../../node_modules/hermes-engine/android/'
     debugImplementation files(hermesPath + "hermes-debug.aar")
     releaseImplementation files(hermesPath + "hermes-release.aar")