Update DevTools DEPS (trusted)

Rolling buildtools/linux64: git_revision:12a6f48f3587a95ccfcf2c28d9f05e472b30b580..git_revision:3468d4868725e310eff5f5cd9b6655110883f55b

Rolling buildtools/mac: git_revision:12a6f48f3587a95ccfcf2c28d9f05e472b30b580..git_revision:3468d4868725e310eff5f5cd9b6655110883f55b

Rolling buildtools/win: git_revision:12a6f48f3587a95ccfcf2c28d9f05e472b30b580..git_revision:3468d4868725e310eff5f5cd9b6655110883f55b

Rolling third_party/siso: git_revision:8240743503f584b5beadcb0fd4fc3178da28ffa6..git_revision:7462aaffc7da5c672efbac0f39e14d3a41862799

Roll created at https://cr-buildbucket.appspot.com/build/8717648441081532369

Bug: none
Change-Id: Id6e385ec0060206322ca627f1cc968b1f7fc1a60
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6452033
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

@@ -32,7 +32,7 @@ vars = {
   'emscripten_tag': 'ade9d780ff17c88d81aa13860361743e3c1e1396',
 
   # GN CIPD package version.
-  'gn_version': 'git_revision:12a6f48f3587a95ccfcf2c28d9f05e472b30b580',
+  'gn_version': 'git_revision:3468d4868725e310eff5f5cd9b6655110883f55b',
 
   'cmake_version': 'version:[email protected]',
 
@@ -59,7 +59,7 @@ vars = {
   'non_git_source': 'True',
 
   # siso CIPD package version
-  'siso_version': 'git_revision:8240743503f584b5beadcb0fd4fc3178da28ffa6',
+  'siso_version': 'git_revision:7462aaffc7da5c672efbac0f39e14d3a41862799',
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.