LAKITU: Increment version to m93

BUG=b/179054156
TEST=presubmit, check milestone number
RELEASE_NOTE=None

Change-Id: I448926c8bac2a34e0ac820bdc0e679b3687d948f
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/chromiumos-overlay/+/11854
Reviewed-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
diff --git a/chromeos/config/chromeos_version.sh b/chromeos/config/chromeos_version.sh
index 7e8a382..2279636 100755
--- a/chromeos/config/chromeos_version.sh
+++ b/chromeos/config/chromeos_version.sh
@@ -45,7 +45,7 @@
 fi
 
 # Major version for Chrome.
-CHROME_BRANCH=89
+CHROME_BRANCH=93
 # Set CHROME values (Used for releases) to pass to chromeos-chrome-bin ebuild
 # URL to chrome archive
 CHROME_BASE=