[cipd] Run cipd_impl.ps1 in constrained language mode
The script downloads the current cipd version from [1], and exposes
functions, variables and aliases into the session (dot-sourcing). This
is unnecessary and prevents the system from running in
ConstrainedLanguage mode.
The change runs the powershell script in script scope only to support
the ConstrainedLanguage mode.
[1] https://chrome-infra-packages.appspot.com/client
Bug: 1442051
Change-Id: I249396714ab41b7f5a5edb96f3146904b4e876f9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/4507036
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Auto-Submit: Alexander Schulze <alexschulze@chromium.org>
Commit-Queue: Alexander Schulze <alexschulze@chromium.org>
Alexander Schulze