build(deps): bump github.com/containerd/containerd/v2 (#1784)

Bumps [github.com/containerd/containerd/v2](https://github.com/containerd/containerd) from 2.1.1 to 2.1.5.
- [Release notes](https://github.com/containerd/containerd/releases)
- [Changelog](https://github.com/containerd/containerd/blob/main/RELEASES.md)
- [Commits](containerd/containerd@v2.1.1...v2.1.5)

---
updated-dependencies:
- dependency-name: github.com/containerd/containerd/v2
  dependency-version: 2.1.5
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]