Update protection level to match system manifest

Keeping the permission policy manifest in sync with the frameworks
change.

Test: atest android.permission2.cts.PermissionPolicyTest

Bug: 270109095
Change-Id: I082ca93fe48a139bf45dfdd84d05b9a12b3fdf32
diff --git a/tests/tests/permission2/res/raw/android_manifest.xml b/tests/tests/permission2/res/raw/android_manifest.xml
index 3bbd587..2012357 100644
--- a/tests/tests/permission2/res/raw/android_manifest.xml
+++ b/tests/tests/permission2/res/raw/android_manifest.xml
@@ -5213,7 +5213,7 @@
          exact alarm APIs.
      -->
     <permission android:name="android.permission.SCHEDULE_EXACT_ALARM"
-        android:protectionLevel="normal|appop"/>
+        android:protectionLevel="signature|privileged|appop"/>
 
     <!-- Allows apps to use exact alarms just like with SCHEDULE_EXACT_ALARM but without needing
     to request this permission from the user.