Update SDK to 18807.0.0

Fixed dependency in iptables

BUG=b/384555763
TEST=presubmit
RELEASE_NOTE=None

Change-Id: I7d92de0b8cee5b099792b947240b35644ebc3cfd
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/chromiumos-overlay/+/89339
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>

chromeos/binhost/host/sdk_version.conf

diff --git a/chromeos/binhost/host/sdk_version.conf b/chromeos/binhost/host/sdk_version.conf
index 64143e4..af09ef1 100644
--- a/chromeos/binhost/host/sdk_version.conf
+++ b/chromeos/binhost/host/sdk_version.conf
@@ -3,10 +3,10 @@
 # found in the LICENSE file.
 
 # The last version of the sdk that we built & tested.
-SDK_LATEST_VERSION="121/18689.0.0/sdk/cros-sdk-18689.0.0"
+SDK_LATEST_VERSION="121/18807.0.0/sdk/cros-sdk-18807.0.0"
 
 # How to find the standalone toolchains from the above sdk.
-TC_PATH="121/18689.0.0/sdk/toolchain-pkgs/%(target)s.tar.xz"
+TC_PATH="121/18807.0.0/sdk/toolchain-pkgs/%(target)s.tar.xz"
 
 # Frozen version of SDK used for bootstrapping.
 # If unset, SDK_LATEST_VERSION will be used for bootstrapping.

chromeos/config/make.conf.amd64-host

diff --git a/chromeos/config/make.conf.amd64-host b/chromeos/config/make.conf.amd64-host
index 776b8aa..8277162 100644
--- a/chromeos/config/make.conf.amd64-host
+++ b/chromeos/config/make.conf.amd64-host
@@ -23,7 +23,7 @@
 PORT_LOGDIR="/var/log/portage"
 
 source /mnt/host/source/src/third_party/chromiumos-overlay/chromeos/binhost/host/amd64-PREFLIGHT_BINHOST.conf
-FULL_BINHOST="gs://cos-prebuilt/121/18689.0.0/sdk"
+FULL_BINHOST="gs://cos-prebuilt/121/18807.0.0/sdk"
 PORTAGE_BINHOST="$PREFLIGHT_BINHOST $FULL_BINHOST"
 
 GENTOO_MIRRORS="https://commondatastorage.googleapis.com/cos-localmirror"