Updates for release v3.21.2 (projectcalico#5151)

- b8efbde Automatic Pin Updates

- c97a92b Automatic Pin Updates

- ba7fe59 Merge pull request projectcalico#1358 from song-jiang/song-node-st
- cf1216b windows: pass ExceptUpgradeService param to stop-calico.ps1 as well (projectcalico#1372)
- e360330 Automatic Pin Updates
- 6411b17 Update pins (projectcalico#1376)

This release is for build purposes only and this should not be refere…

…nced externally.

libcalico is not a stable interface.
If you need an API you should use [projectcalico/api](https://github.com/projectcalico/api).

- 9419d0a Automatic Pin Updates

- f4181b0 Update pins

- ed8b33a Automatic Pin Updates

- 38e3631 Automatic Pin Updates

- e4002af Automatic Pin Updates

- 6ae68db Automatic Pin Updates