[DEPS] update luci-go

Bug: 1143567
Change-Id: I37f738d40c7a424440bf892405a0cca1ca2742cb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2551867Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Ye Kuang <yekuang@google.com>
Auto-Submit: Ye Kuang <yekuang@google.com>
Cr-Commit-Position: refs/heads/master@{#829620}

DEPS

@@ -178,7 +178,7 @@ 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:1a022d3a4c50be4207ee93451255d71896416596',
+  'luci_go': 'git_revision:6cbe3f56e9f00b8f65eae21f01838a8b58191a47',
 
   # This can be overridden, e.g. with custom_vars, to build clang from HEAD
   # instead of downloading the prebuilt pinned revision.