Update V8 DEPS.

Rolling v8/buildtools to be55b9ad86a4a5f760895984f93f76038e08e29e

Rolling v8/tools/clang to 2b2edb2dbbc5818f98972eeefd756cdcd69aa6f3

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

Review URL: https://codereview.chromium.org/1650463002

Cr-Commit-Position: refs/heads/master@{#33598}

DEPS

@@ -12,7 +12,7 @@ deps = {
   "v8/third_party/icu":
     Var("git_url") + "/chromium/deps/icu.git" + "@" + "8d342a405be5ae8aacb1e16f0bc31c3a4fbf26a2",
   "v8/buildtools":
-    Var("git_url") + "/chromium/buildtools.git" + "@" + "11961c21510b90aa6057064459a1af53f3fff449",
+    Var("git_url") + "/chromium/buildtools.git" + "@" + "be55b9ad86a4a5f760895984f93f76038e08e29e",
   "v8/base/trace_event/common":
     Var("git_url") + "/chromium/src/base/trace_event/common.git" + "@" + "d83d44b13d07c2fd0a40101a7deef9b93b841732",
   "v8/tools/swarming_client":
@@ -29,7 +29,7 @@ deps = {
   "v8/test/test262/data":
     Var("git_url") + "/external/github.com/tc39/test262.git" + "@" + "67ba34b03a46bac4254223ae25f42c7b959540f0",
   "v8/tools/clang":
-    Var("git_url") + "/chromium/src/tools/clang.git" + "@" + "50155e1a5a647a6184e3fe2c687e2fbe1720d3e4",
+    Var("git_url") + "/chromium/src/tools/clang.git" + "@" + "2b2edb2dbbc5818f98972eeefd756cdcd69aa6f3",
 }
 
 deps_os = {