prebuilt.conf: updating FULL_BINHOST

Change-Id: Ie1dc24ece666087b7e4a3d9d31531476149c8056
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/board-overlays/+/2284572
diff --git a/overlay-arm64-generic/prebuilt.conf b/overlay-arm64-generic/prebuilt.conf
index 8a94711..d8dde10 100644
--- a/overlay-arm64-generic/prebuilt.conf
+++ b/overlay-arm64-generic/prebuilt.conf
@@ -1 +1 @@
-FULL_BINHOST="gs://chromeos-prebuilt/board/arm64-generic/full-R86-13330.0.0-rc2/packages/"
+FULL_BINHOST="gs://chromeos-prebuilt/board/arm64-generic/full-R86-13331.0.0-rc1/packages/"