manifes: android-10_r28

Change-Id: I960f1de3a955cac99c785323c7953df2dde1919a

default.xml

@@ -4,7 +4,7 @@
   <remote  name="aosp"
            fetch="https://android.googlesource.com"
            review="https://android-review.googlesource.com/" />
-  <default revision="refs/tags/android-10.0.0_r25"
+  <default revision="refs/tags/android-10.0.0_r28"
            remote="aosp"
            sync-c="true"
            sync-j="12" />