Update DevTools DEPS (trusted)

Rolling buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/83240e3..4f86145

Roll created at https://cr-buildbucket.appspot.com/build/8717614467565123537

Bug: none
Change-Id: I7e5dfbbbaa95c05705ca5ed40f6723b2d1f13d1f
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6454363
Commit-Queue: Devtools Autoroller <devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Devtools Autoroller <devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>

Author: devtools-ci-autoroll-builder

DEPS

@@ -15,7 +15,7 @@ vars = {
   'build_revision': 'e13953ced04ed05f45aa3c961bd6d802aced74ec',
 
   'buildtools_url': 'https://chromium.googlesource.com/chromium/src/buildtools.git',
-  'buildtools_revision': '83240e3cc59b1b1cc4a9b60099f8d93580333383',
+  'buildtools_revision': '4f86145940cad1594f42b246824fe30035d25cc5',
 
   'depot_tools_url': 'https://chromium.googlesource.com/chromium/tools/depot_tools.git',
   'depot_tools_revision': 'f40ddcd8d51626fb7be3ab3c418b3f3be801623f',