Use res-auto as app xml namespace instead of settings.

This is necessary for SettingsIntelligence to parse settings:keywords
when indexing search stuff.

Bug: 64938328
Test: rerun tests
Change-Id: I0d8885c854852020dfa0b9faa3044d4a1b82f8f2
diff --git a/res/xml/security_settings.xml b/res/xml/security_settings.xml
index aa4ca9d..31f2334 100644
--- a/res/xml/security_settings.xml
+++ b/res/xml/security_settings.xml
@@ -16,7 +16,7 @@
 
 <PreferenceScreen
     xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:settings="http://schemas.android.com/apk/res/com.android.settings"
+    xmlns:settings="http://schemas.android.com/apk/res-auto"
     android:key="security_dashboard_page"
     android:title="@string/security_settings_title"
     settings:initialExpandedChildrenCount="9">