Update Android-AppAuth to 0.7.1

From https://github.com/openid/AppAuth-Android/releases

Minor bug fixes:
- Synchronizes multiple actions when requiring token refresh (#332)
- Make handling of non-standard expires_at more tolerant (#336)
- Changes related to Android tool changes between v25 and v27 (#341, #363)
- Fix encoding of client ids and secrets for auth (#345)
- Handle CustomTabsSession.newSession failures (#362)
- Do not automatically pass scope on token exchange request (#364)
- Do not override tab title setting (#365)
- Respect default browser of the user correctly (#379)
- Updated custom tab definitions, including Firefox (#378, #383)

Author: drice

android/build.gradle

@@ -35,5 +35,5 @@ repositories {
 
 dependencies {
     compile 'com.facebook.react:react-native:+'
-    compile "net.openid:appauth:0.7.0"
+    compile "net.openid:appauth:0.7.1"
 }