Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/e4c7cf0..9275a0c

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

Change-Id: I16f6a0650309b8e0d1ce3f25cd1159cefebf861d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1757692Reviewed-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@{#63231}

DEPS

@@ -57,7 +57,7 @@ vars = {
 
 deps = {
   'v8/build':
-    Var('chromium_url') + '/chromium/src/build.git' + '@' + 'e4c7cf0e80836d43ad3bbf5bfbeab85b1eaf9660',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + '9275a0cd217df4dee5f6bf11535d1df5dc6c7795',
   'v8/third_party/depot_tools':
     Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + '72fbaf4d465e86222c92a21283a0d7406ca05323',
   'v8/third_party/icu':