Update DevTools DEPS (trusted)

Rolling buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/674b131..02f9e66

Rolling third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/6cac3e7..3f15de2

Roll created at https://cr-buildbucket.appspot.com/build/8702122386000618033

Bug: none
Change-Id: If06a02cb24b4a35d1f64ee94ff378bc40e3762be
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/7004384
Bot-Commit: Devtools Autoroller <devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Devtools Autoroller <devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>

Author: devtools-ci-autoroll-builder

DEPS

@@ -15,10 +15,10 @@ vars = {
   'build_revision': '58de1d33c025bc25bb6932ed41688ed073f33787',
 
   'buildtools_url': 'https://chromium.googlesource.com/chromium/src/buildtools.git',
-  'buildtools_revision': '674b131e2bf5dd1ed80df643db3d9bd3c27e6591',
+  'buildtools_revision': '02f9e66e820bb27fed124ce2a46c0fb203cf99a6',
 
   'depot_tools_url': 'https://chromium.googlesource.com/chromium/tools/depot_tools.git',
-  'depot_tools_revision': '6cac3e72abac6538822382a2814bebf7f39eb25f',
+  'depot_tools_revision': '3f15de2ac33315ac4f08c0da2cb723ccf07f8217',
 
   'inspector_protocol_url': 'https://chromium.googlesource.com/deps/inspector_protocol',
   'inspector_protocol_revision': '1b1bcbbe060e8c8cd8704f00f78978c50991b307',