Roll SK Tool from bdc889bc194c to 1a8ff8585fce

https://skia.googlesource.com/buildbot.git/+log/bdc889bc194c..1a8ff8585fce

2021-05-16 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update CIPD Packages
2021-05-13 lovisolo@google.com [page object] Refactor API to remove most nested awaits in client code.
2021-05-13 lovisolo@google.com [page object] Rename select{One,All}POE methods to bySelector / bySelectorAll.
2021-05-13 lovisolo@google.com [page object] Remove unused select{One,All}POEThen* methods.

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 lovisolo@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: lovisolo@google.com
Change-Id: I3450a68025bf076c699ed1d8cd5e1e03efd8528d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/408980
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 0267557..046fbcc 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:bccbf0e3ae0f6382cb48473f13f4751b9d56d9cc',
+  'sk_tool_revision': 'git_revision:1a8ff8585fce92c0373912c4af385b2e78f5c04b',
 }
 
 deps = {