prebuilt.conf: updating FULL_BINHOST

Change-Id: I424159cd890fdbc806743aff3a78c2171303e670
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/board-overlays/+/2116272
diff --git a/overlay-kevin64/prebuilt.conf b/overlay-kevin64/prebuilt.conf
index 5b95c156..de05ee4 100644
--- a/overlay-kevin64/prebuilt.conf
+++ b/overlay-kevin64/prebuilt.conf
@@ -1 +1 @@
-FULL_BINHOST="gs://chromeos-prebuilt/board/kevin64/full-R83-12995.0.0-rc2/packages/"
+FULL_BINHOST="gs://chromeos-prebuilt/board/kevin64/full-R83-12996.0.0-rc1/packages/"