Update V8 DEPS.

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/4ebfe46..efce0d1

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

Change-Id: I20fe4d684b2ee9a7c80fdc062147dc2489922c65
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1789616Reviewed-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@{#63603}

DEPS

@@ -74,7 +74,7 @@ deps = {
   'v8/build':
     Var('chromium_url') + '/chromium/src/build.git' + '@' + '6ff11c8756c66a1344632ab8ae8b7bfe0719a572',
   'v8/third_party/depot_tools':
-    Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + '4ebfe4643bf06794bbf2620e4d2d8dda21f62987',
+    Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + 'efce0d1b7657c440c90f0f4bce614b96672b9e0b',
   'v8/third_party/icu':
     Var('chromium_url') + '/chromium/deps/icu.git' + '@' + '53f6b233a41ec982d8445996247093f7aaf41639',
   'v8/third_party/instrumented_libraries':