Update V8 DEPS.

Rolling v8/buildtools/linux64: git_revision:a5bcbd726ac7bd342ca6ee3e3a006478fd1f00b5..git_revision:0c5557d173ce217cea095086a9c9610068123503

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/7a8bf94..a1266b6

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

Change-Id: Id7d531f24a9f1becd4c0d03fc09d747c2d1a9dda
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1999804Reviewed-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@{#65744}

DEPS

@@ -35,7 +35,7 @@ vars = {
   'check_v8_header_includes': False,
 
   # GN CIPD package version.
-  'gn_version': 'git_revision:a5bcbd726ac7bd342ca6ee3e3a006478fd1f00b5',
+  'gn_version': 'git_revision:0c5557d173ce217cea095086a9c9610068123503',
 
   # luci-go CIPD package version.
   'luci_go': 'git_revision:37a855b64d59b7f079c9a0e5368f2757099d14d3',
@@ -82,7 +82,7 @@ deps = {
   'v8/build':
     Var('chromium_url') + '/chromium/src/build.git' + '@' + '6e49eefa473f1335c0e23579d70c2ab108a29e82',
   'v8/third_party/depot_tools':
-    Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + '7a8bf94894ef3c5da4e09b1850e3b8a268153147',
+    Var('chromium_url') + '/chromium/tools/depot_tools.git' + '@' + 'a1266b63b566ad7632c542526018b73cba0eb8ff',
   'v8/third_party/icu':
     Var('chromium_url') + '/chromium/deps/icu.git' + '@' + 'dbd3825b31041d782c5b504c59dcfb5ac7dda08c',
   'v8/third_party/instrumented_libraries':