Update DevTools DEPS (trusted)

Rolling buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/da307d1..993d5b2

Roll created at https://cr-buildbucket.appspot.com/build/8694546215607807281

Bug: none
Change-Id: Iebf1642533f04c4a6a3a64cbbf9c0eba231ba835
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/7324455
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

@@ -15,7 +15,7 @@ vars = {
   'build_revision': '726ac7741fe428eff5da63e0374c66f7f25788b8',
 
   'buildtools_url': 'https://chromium.googlesource.com/chromium/src/buildtools.git',
-  'buildtools_revision': 'da307d169964b96ada0bb8deb76aeea3afb635d5',
+  'buildtools_revision': '993d5b23cd8e2319bab0ad9939bef2a6c3f23faa',
 
   'depot_tools_url': 'https://chromium.googlesource.com/chromium/tools/depot_tools.git',
   'depot_tools_revision': '967382fdcd1477dab3a7fec8eec3e3d5368bb0fe',