API level 30 upgrade: AOSP Contacts

The AndroidManifest.xml file of the AOSP Contacts
app has been upgraded such that its "targetSdkVersion"
is 30.

Test: manual - the application builds successfully and
the all the unit tests pass.

Change-Id: I4879293221fe6e75f674fb7ac4cfc036c44edc36
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index e233db9..e8eb552 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -21,7 +21,7 @@
 
     <uses-sdk
         android:minSdkVersion="21"
-        android:targetSdkVersion="29"/>
+        android:targetSdkVersion="30"/>
 
     <original-package android:name="com.android.contacts"/>