Update V8 DEPS.

Rolling v8/third_party/icu: https://chromium.googlesource.com/chromium/deps/icu/+log/45f655f..407b393

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

Change-Id: I66c8e7e5cb96dbaa4a2e80d0eaace3dfd1624c79
Reviewed-on: https://chromium-review.googlesource.com/c/1341454
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#57589}

DEPS

@@ -17,7 +17,7 @@ deps = {
   'v8/third_party/depot_tools':
     Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + 'c6ffd7af7d84ec354a92a0dc11613ec23cf82c60',
   'v8/third_party/icu':
-    Var('chromium_url') + '/chromium/deps/icu.git' + '@' + '45f655f2feb7069a7b9b47d1b1a596807bfd4220',
+    Var('chromium_url') + '/chromium/deps/icu.git' + '@' + '407b39301e71006b68bd38e770f35d32398a7b14',
   'v8/third_party/instrumented_libraries':
     Var('chromium_url') + '/chromium/src/third_party/instrumented_libraries.git' + '@' + 'a959e4f0cb643003f2d75d179cede449979e3e77',
   'v8/buildtools':