Roll SK Tool from 473c0ef7fb65 to 4ef22d867c8f

https://skia.googlesource.com/buildbot.git/+log/473c0ef7fb65..4ef22d867c8f

2021-05-20 lovisolo@google.com [gold] Port multi-zoom-sk to TypeScript.
2021-05-20 lovisolo@google.com Update BUILD files with Gazelle.
2021-05-20 rmistry@google.com Look for main branch to get list of trybots in cq_watcher
2021-05-20 rmistry@google.com Specify branch to update in androidingest
2021-05-20 rmistry@google.com Push to main branch of perf-buildid/android-master

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/sk-tool-skia
Please CC jcgregorio@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

Tbr: jcgregorio@google.com
Change-Id: I05c0d8bbc2efc254138d76b79c5d14ed83605f8a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/410750
Reviewed-by: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index 481e875..5b84b16 100644
--- a/DEPS
+++ b/DEPS
@@ -6,7 +6,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling different
   # dependencies without interference from each other.
-  'sk_tool_revision': 'git_revision:8650dbaf6050a50c76e11a4576f492ca4b1189a1',
+  'sk_tool_revision': 'git_revision:4ef22d867c8f8f60711b24635b724d75ec7377c6',
 }
 
 deps = {