Update V8 DEPS (trusted-origins)

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/ae20ef2..21685e0

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com

Change-Id: Icb2309a1db1c9c08109713e514972c8534053abe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3724527
Bot-Commit: 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/main@{#81370}

DEPS

@@ -91,7 +91,7 @@ deps = {
   'base/trace_event/common':
     Var('chromium_url') + '/chromium/src/base/trace_event/common.git' + '@' + 'd115b033c4e53666b535cbd1985ffe60badad082',
   'build':
-    Var('chromium_url') + '/chromium/src/build.git' + '@' + 'ae20ef26a5c38f38ea927419b046c59e9b1040e7',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + '21685e0c72e27c74816fb9679c43d4324a587da9',
   'buildtools':
     Var('chromium_url') + '/chromium/src/buildtools.git' + '@' + '34f9ff8fd5f494bf2b886337e6ef6fcea414cb11',
   'buildtools/clang_format/script':