DEPS: update luci_go

https://chromium.googlesource.com/infra/infra/+/56ae79476e3caf14da59d75118408aa778637936

Bug: 1070487
Change-Id: I036f6ff042f8f5ee7fd3e8d536c113197a7d1850
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2151380
Auto-Submit: Ye Kuang <yekuang@google.com>
Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Ye Kuang <yekuang@google.com>
Cr-Commit-Position: refs/heads/master@{#759524}

DEPS

@@ -156,7 +156,7 @@ vars = {
   # luci-go CIPD package version.
   # Make sure the revision is uploaded by infra-packagers builder.
   # https://ci.chromium.org/p/infra-internal/g/infra-packagers/console
-  'luci_go': 'git_revision:513b1319d7d855f6c42bc01471562df910fd61b3',
+  'luci_go': 'git_revision:56ae79476e3caf14da59d75118408aa778637936',
 
   # This can be overridden, e.g. with custom_vars, to build clang from HEAD
   # instead of downloading the prebuilt pinned revision.