build(deps): bump github.com/containerd/platforms

Bumps [github.com/containerd/platforms](https://github.com/containerd/platforms) from 1.0.0-rc.2 to 1.0.0-rc.3.
- [Release notes](https://github.com/containerd/platforms/releases)
- [Commits](https://github.com/containerd/platforms/compare/v1.0.0-rc.2...v1.0.0-rc.3)

---
updated-dependencies:
- dependency-name: github.com/containerd/platforms
  dependency-version: 1.0.0-rc.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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