Update V8 DEPS.

Rolling v8/third_party/icu to 1b697da5c2c0112e2b70e7e75d3e3d985f464a8f

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1217893007

Cr-Commit-Position: refs/heads/master@{#29399}

DEPS

@@ -10,7 +10,7 @@ deps = {
   "v8/build/gyp":
     Var("git_url") + "/external/gyp.git" + "@" + "5122240c5e5c4d8da12c543d82b03d6089eb77c5",
   "v8/third_party/icu":
-    Var("git_url") + "/chromium/deps/icu.git" + "@" + "c3f79166089e5360c09e3053fce50e6e296c3204",
+    Var("git_url") + "/chromium/deps/icu.git" + "@" + "1b697da5c2c0112e2b70e7e75d3e3d985f464a8f",
   "v8/buildtools":
     Var("git_url") + "/chromium/buildtools.git" + "@" + "ecc8e253abac3b6186a97573871a084f4c0ca3ae",
   "v8/testing/gtest":