Update V8 DEPS.

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/f022f91..66badbd

Rolling v8/third_party/icu: https://chromium.googlesource.com/chromium/deps/icu/+log/a191af9..7ca3ffa

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

Change-Id: I06c1f34978d0cbb0a3deb1ae5b5d3b732c289186
Reviewed-on: https://chromium-review.googlesource.com/1215009
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Reviewed-by: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#55740}

DEPS

@@ -15,9 +15,9 @@ deps = {
   'v8/build':
     Var('chromium_url') + '/chromium/src/build.git' + '@' + '0e1589b1669eb6f81a62c44d0e2b84a9c3b398e1',
   'v8/third_party/depot_tools':
-    Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + 'f022f91453f7c9caef7b7c7519d2e311dc0e72bd',
+    Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + '66badbd1cb2847380255ba6842e776af216ef4af',
   'v8/third_party/icu':
-    Var('chromium_url') + '/chromium/deps/icu.git' + '@' + 'a191af9d025859e8368b8b469120d78006e9f5f6',
+    Var('chromium_url') + '/chromium/deps/icu.git' + '@' + '7ca3ffa77d635e44b9735e1b54fb9c4da3b6c821',
   'v8/third_party/instrumented_libraries':
     Var('chromium_url') + '/chromium/src/third_party/instrumented_libraries.git' + '@' + 'a90cbf3b4216430a437991fb53ede8e048dea454',
   'v8/buildtools':