Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/99a60dd..524030d

TBR=machenbach@chromium.org,hablich@chromium.org,sergiyb@chromium.org

Change-Id: I7b483abcaed40e74e54bc950a03c31d12e54e04f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1547125Reviewed-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@{#60536}

DEPS

@@ -57,7 +57,7 @@ vars = {
 
 deps = {
   'v8/build':
-    Var('chromium_url') + '/chromium/src/build.git' + '@' + '99a60dd78784080598f0f2b19b90ad909c161d3d',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + '524030d844da02acfd3cd744db5d8e21e4b56946',
   'v8/third_party/depot_tools':
     Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + '8d3ba46327207c40e66b4ec818cec077f0ac08cf',
   'v8/third_party/icu':