Pin Zephyr and Pigweed

Change-Id: I2dcdce5bbecad189e8f15b3beb2db116c8d57b9f
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/zephyr/+/201930
Commit-Queue: Yuval Peress <peress@google.com>
Reviewed-by: Kayce Basques <kayce@google.com>
Pigweed-Auto-Submit: Yuval Peress <peress@google.com>
3 files changed