WATCHLISTS: CC chops-source-team@ on all depot_tools changes.

Change-Id: I60572a93178038335b5a6af0f03ad6500a72c862
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2194898Reviewed-by: Andy Perelson <ajp@chromium.org>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>

WATCHLISTS

@@ -19,7 +19,7 @@
   'WATCHLISTS': {
     'this_file': [],
     'depot_tools': [
-      'ehmaldonado+depot_tools@google.com',
+      'chops-source-team+depot_tools@google.com',
     ],
   },