Roll buildtools/ 6d00f8d8c..16be42a9f (8 commits)

https://chromium.googlesource.com/chromium/src/buildtools.git/+log/6d00f8d8c5e0..16be42a9ff1f

Created with:
  roll-dep buildtools

Change-Id: I3273d0cd98b42100b6f4728e36599f4666e89b0b
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/110671
Reviewed-by: Nigi <nigi@chromium.org>
Auto-Submit: Lei Zhang <thestig@chromium.org>
Commit-Queue: Nigi <nigi@chromium.org>
diff --git a/DEPS b/DEPS
index a1c6db7..902a6fd 100644
--- a/DEPS
+++ b/DEPS
@@ -58,7 +58,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling buildtools
   # and whatever else without interference from each other.
-  'buildtools_revision': '6d00f8d8c5e004b906fb8d6fbf7421da28935798',
+  'buildtools_revision': '16be42a9ff1f7e4a3e53b93b3adc181fa7ff9161',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling catapult
   # and whatever else without interference from each other.