Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/63f397a..a7674ea

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/4fc4281..9ec8468

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

Change-Id: I3df962f67c1264ec4642e9d43a62fafdcb1402cf
Reviewed-on: https://chromium-review.googlesource.com/c/1270262Reviewed-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@{#56460}

DEPS

@@ -13,7 +13,7 @@ vars = {
 
 deps = {
   'v8/build':
-    Var('chromium_url') + '/chromium/src/build.git' + '@' + '63f397a2dfe553dfa9144507429d0bf05f948246',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + 'a7674eacc34947257c78fe6ba5cf0da17f60696c',
   'v8/third_party/depot_tools':
     Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + '71e3be7a50c21faeee91ed99a8d5addfb7594e7c',
   'v8/third_party/icu':
@@ -33,7 +33,7 @@ deps = {
     'condition': 'checkout_android',
   },
   'v8/third_party/catapult': {
-    'url': Var('chromium_url') + '/catapult.git' + '@' + '4fc4281d2152a36762a0bf47ba76bf8d4a6ee234',
+    'url': Var('chromium_url') + '/catapult.git' + '@' + '9ec8468cfde0868ce5f3893e819087278c5af988',
     'condition': 'checkout_android',
   },
   'v8/third_party/colorama/src': {