Manifest for Android 8.0.0 Release 13 (OPR1.170623.027)

Change-Id: Iffed53019180ece18b7bbf8039d133b40816e96f
diff --git a/default.xml b/default.xml
index 1e06ecc..35f41f9 100644
--- a/default.xml
+++ b/default.xml
@@ -4,7 +4,7 @@
   <remote  name="aosp"
            fetch=".."
            review="https://android-review.googlesource.com/" />
-  <default revision="refs/tags/android-8.0.0_r12"
+  <default revision="refs/tags/android-8.0.0_r13"
            remote="aosp"
            sync-j="4" />