Update V8 DEPS.

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/b6bab93..8ec7b14

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

Change-Id: Ifd4855bf671093c4494776ff16d4a58a0ef4eade
Reviewed-on: https://chromium-review.googlesource.com/693092Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48249}

DEPS

@@ -48,7 +48,7 @@ deps_os = {
     "v8/third_party/android_tools":
       Var("chromium_url") + "/android_tools.git" + "@" + "ca9dc7245b888c75307f0619e4a39fb46a82de66",
     "v8/third_party/catapult":
-      Var('chromium_url') + "/catapult.git" + "@" + "b6bab938e5ff202ddf6377196e0b23bf99247b5a",
+      Var('chromium_url') + "/catapult.git" + "@" + "8ec7b14edf48a27389a11c5af3bc14991eb28152",
   },
 }