Manifest for Android Mainline 12.0.0 Release 121 (8641177,com.google.android.mediaprovider)

Change-Id: I08f36af51630905031c7cdfb8ae5b443ab39e2b5
diff --git a/default.xml b/default.xml
index 917c0cb..4a44019 100644
--- a/default.xml
+++ b/default.xml
@@ -4,11 +4,11 @@
   <remote  name="aosp"
            fetch=".."
            review="https://android-review.googlesource.com/" />
-  <default revision="refs/tags/android-mainline-12.0.0_r106"
+  <default revision="refs/tags/android-mainline-12.0.0_r121"
            remote="aosp"
            sync-j="4" />
 
-  <superproject name="platform/superproject" remote="aosp" revision="android-mainline-12.0.0_r106" />
+  <superproject name="platform/superproject" remote="aosp" revision="android-mainline-12.0.0_r121" />
   <contactinfo bugurl="go/repo-bug" />
 
   <project path="build/make" name="platform/build" groups="pdk" >