Bump led version.

aaf3a2cfc [led] fix retention of luci_project swarming tag.
1048c311a [led] add get-build command for getting buildbucket builds.

R=dnj@chromium.org

Bug:
Change-Id: I3e359a85a0fedfb225cb7c1fe0fc404e5e47f8d8
Reviewed-on: https://chromium-review.googlesource.com/581495
Commit-Queue: Daniel Jacques <dnj@chromium.org>
Reviewed-by: Daniel Jacques <dnj@chromium.org>

cipd_manifest.txt

@@ -6,4 +6,4 @@
 infra/tools/luci/vpython/${platform}  git_revision:5cf65fdf804a9b3f3023f79d5b3cab2a88ccd09e
 
 # LUCI editor
-infra/tools/luci/led/${platform}  git_revision:5cf65fdf804a9b3f3023f79d5b3cab2a88ccd09e
+infra/tools/luci/led/${platform}  git_revision:aaf3a2cfccc227b5141caa1b6b3502c9907d7420