Update DevTools DEPS.
Update DevTools DEPS.

Rolling build: https://chromium.googlesource.com/chromium/src/build/+log/4be7c7b..0a7e5b8

Rolling buildtools/linux64: git_revision:2ecd43a10266bd091c98e6dcde507c64f6a0dad3..git_revision:e62d4e1938a45babc9afb6db543f388cd1802a52

Rolling third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/b603090..407333d

R=machenbach@chromium.org,liviurau@chromium.org

Bug: none
Change-Id: Icb57eaf082037319294f4a07b277592910ad594d
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3705341
Bot-Commit: Devtools Autoroller <075cca983f8f93eec1be8cf9702f03e09507e730@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Devtools Autoroller <075cca983f8f93eec1be8cf9702f03e09507e730@chops-service-accounts.iam.gserviceaccount.com>

ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend