Update DevTools DEPS (trusted)

Rolling third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/6cf251b..e69b086

Roll created at https://cr-buildbucket.appspot.com/build/8722540677811929697

Bug: none
Change-Id: Icd487da2c3c5f42457948447c553747f624aa186
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6278476
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

@@ -18,7 +18,7 @@ vars = {
   'buildtools_revision': '2f50fd2eb74ff305e2e228638019c15ba0ad7c83',
 
   'depot_tools_url': 'https://chromium.googlesource.com/chromium/tools/depot_tools.git',
-  'depot_tools_revision': '6cf251b5179f2cd5157cc314b60ef461d863eca1',
+  'depot_tools_revision': 'e69b086c0f3764fe1211435b297f793e02ecd13e',
 
   'inspector_protocol_url': 'https://chromium.googlesource.com/deps/inspector_protocol',
   'inspector_protocol_revision': '940abfc668be2591483f7132145593c6a047f3cf',