Update DevTools DEPS (trusted)

Rolling third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/4ac4d26..c4e7c87

Roll created at https://cr-buildbucket.appspot.com/build/8721691331423339809

Bug: none
Change-Id: I4b32d0cac1bd0a3ad6df81816f40fcf850f256ce
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6310444
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': 'b248db940ef3dd7e5f4694ebf4d8a3f67aa0086d',
 
   'depot_tools_url': 'https://chromium.googlesource.com/chromium/tools/depot_tools.git',
-  'depot_tools_revision': '4ac4d26e80e91c5e18f598b85fa18d5f58318e47',
+  'depot_tools_revision': 'c4e7c8717cbd057339731e8b629c2e29fcba9c42',
 
   'inspector_protocol_url': 'https://chromium.googlesource.com/deps/inspector_protocol',
   'inspector_protocol_revision': '940abfc668be2591483f7132145593c6a047f3cf',