[DO NOT MERGE] Bump Contacts to 1.4.21 and targetSdkVersion as 24.

BUG 28555200

Change-Id: Ia9ff1d5391a2015dce418eebc9637318ddc4f771
diff --git a/tests/AndroidManifest.xml b/tests/AndroidManifest.xml
index adc62dc..e82cea8 100644
--- a/tests/AndroidManifest.xml
+++ b/tests/AndroidManifest.xml
@@ -19,7 +19,7 @@
 
     <uses-sdk
         android:minSdkVersion="21"
-        android:targetSdkVersion="23" />
+        android:targetSdkVersion="24" />
 
     <uses-permission android:name="android.permission.READ_CONTACTS" />
     <uses-permission android:name="android.permission.WRITE_CONTACTS" />