Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/2b8377b..fc95b89

TBR=machenbach@chromium.org,tmrts@chromium.org,v8-waterfall-sheriff@grotations.appspotmail.com

Change-Id: Ic59889e29560c4a2d8b91fbe04e4fd1101f4b924
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2394857Reviewed-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@{#69712}

DEPS

@@ -82,7 +82,7 @@ vars = {
 
 deps = {
   'build':
-    Var('chromium_url') + '/chromium/src/build.git' + '@' + '2b8377b5b8a7f40e409e3f83348dda5eb910cfb7',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + 'fc95b89607dcc3241d7042c26b5eff85ab8f6a19',
   'third_party/depot_tools':
     Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + 'a070dd18d79dfa236d16ece74e0dcd514851331f',
   'third_party/icu':