Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/9caeb8b..03d0c36

TBR=machenbach@chromium.org,tmrts@chromium.org

Change-Id: Ifb2da55fd51334b96b5000bd956d0fd12f47d1a5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1965537Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#65453}

DEPS

@@ -79,7 +79,7 @@ vars = {
 
 deps = {
   'v8/build':
-    Var('chromium_url') + '/chromium/src/build.git' + '@' + '9caeb8bbfba05d281ec05f4afa91a72aaf8cdd1b',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + '03d0c36c52efaf63504c4755f0b9eaa46da87016',
   'v8/third_party/depot_tools':
     Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + 'ba4699fef545e5b9dcd00d626b09f13bccce4c4f',
   'v8/third_party/icu':