Update DevTools DEPS (trusted)

Rolling third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/237b84e..ab387d1

Roll created at https://cr-buildbucket.appspot.com/build/8722416105987850305

Bug: none
Change-Id: I54a605424d7e989b2165ed91659d9d3f091ed138
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6285706
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

@@ -18,7 +18,7 @@ vars = {
   'buildtools_revision': 'd1ed719a33042a69290036402227949ec4d11877',
 
   'depot_tools_url': 'https://chromium.googlesource.com/chromium/tools/depot_tools.git',
-  'depot_tools_revision': '237b84e76cc330406323bca01ecc44b828291bf5',
+  'depot_tools_revision': 'ab387d1ddc530d405f662904f2df292f700e4b0f',
 
   'inspector_protocol_url': 'https://chromium.googlesource.com/deps/inspector_protocol',
   'inspector_protocol_revision': '940abfc668be2591483f7132145593c6a047f3cf',