manifest: android-9.0.0_r34

Change-Id: I676c2dccea9d1f30ece962046bacaa51a1edcd3a

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-9.0.0_r31"
+  <default revision="refs/tags/android-9.0.0_r34"
            remote="aosp"
            sync-c="true"
            sync-j="12" />