Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/77c810a..6ae9325

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/1c2fa0f..04600b4

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

Change-Id: I97e0449cc11eb30e890862c044cfde59172ed75d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1525864Reviewed-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@{#60263}

DEPS

@@ -16,9 +16,9 @@ vars = {
 
 deps = {
   'v8/build':
-    Var('chromium_url') + '/chromium/src/build.git' + '@' + '77c810a20b3f90dc556b5cacc425599edd184824',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + '6ae93259e790c8067b519e32f7aebc1aa3836059',
   'v8/third_party/depot_tools':
-    Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + '1c2fa0fdda124fad7f41d30d19efb901df7e4408',
+    Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + '04600b4f26bdd5534788d437d0f82a5a47d97deb',
   'v8/third_party/icu':
     Var('chromium_url') + '/chromium/deps/icu.git' + '@' + '8c67416ccb4da42d817e7081ff83a2193b1aabe7',
   'v8/third_party/instrumented_libraries':