Update V8 DEPS (trusted-origins)

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/ad70f68..78234e5

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

Change-Id: Ib3a6f9fcaa6cd837c18356186bad1d8ea5e9da43
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3758705
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@{#81677}

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' + '@' + 'ad70f68552df0f19b333f855bc39513a8d21bdff',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + '78234e59faec88b9e1557774ce3dac75d17032af',
   'buildtools':
     Var('chromium_url') + '/chromium/src/buildtools.git' + '@' + '34f9ff8fd5f494bf2b886337e6ef6fcea414cb11',
   'buildtools/clang_format/script':