manifest: android-9.0.0_r31 -> android-9.0.0_r34

Change-Id: I53f2844bd0891d4b05e1c079a16869e7caf02280
diff --git a/default.xml b/default.xml
index 1ca08f5..36393ee 100644
--- a/default.xml
+++ b/default.xml
@@ -11,7 +11,7 @@
   <remote  name="aosp"
            fetch="https://android.googlesource.com"
            review="android-review.googlesource.com"
-           revision="refs/tags/android-9.0.0_r31" />
+           revision="refs/tags/android-9.0.0_r34" />
 
   <default revision="refs/heads/lineage-16.0"
            remote="github"