Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/0efd610..2dbf41f

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/6c48487..c73782c

TBR=machenbach@chromium.org,tmrts@chromium.org,v8-waterfall-sheriff@grotations.appspotmail.com

Change-Id: I6ca1f3428fd4c73446ecc2927a5493b42c39a73d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2384549Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#69616}

DEPS

@@ -82,9 +82,9 @@ vars = {
 
 deps = {
   'build':
-    Var('chromium_url') + '/chromium/src/build.git' + '@' + '0efd6102f750201dd9d6a3435ec061b410daa461',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + '2dbf41fec1e6676d0be618ef00156a30b2fe3f7a',
   'third_party/depot_tools':
-    Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + '6c484875cdcbfeba43a4fae0106a1be8ca65eff1',
+    Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + 'c73782c8d8ffbb4fc5cc7c88150706066e3d99a9',
   'third_party/icu':
     Var('chromium_url') + '/chromium/deps/icu.git' + '@' + '79326efe26e5440f530963704c3c0ff965b3a4ac',
   'third_party/instrumented_libraries':