Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/6c5151b..555c8b4

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com

Change-Id: Ie93c78b95a8dae9f353a49d4ba1f90a7e575f8b2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3364387
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#78461}

DEPS

@@ -83,7 +83,7 @@ deps = {
   'base/trace_event/common':
     Var('chromium_url') + '/chromium/src/base/trace_event/common.git' + '@' + '7f36dbc19d31e2aad895c60261ca8f726442bfbb',
   'build':
-    Var('chromium_url') + '/chromium/src/build.git' + '@' + '6c5151bec14ffe601829c36cea4cb51523c71ca6',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + '555c8b467c21e2c4b22d00e87e3faa0431df9ac2',
   'buildtools':
     Var('chromium_url') + '/chromium/src/buildtools.git' + '@' + 'f78b4b9f33bd8ef9944d5ce643daff1c31880189',
   'buildtools/clang_format/script':