[20.10] update containerd binary to v1.4.11
The eleventh patch release for containerd 1.4 is a security release to fix CVE-2021-41103.
Notable Updates
- Fix insufficiently restricted permissions on container root and plugin directories GHSA-c2h3-6mxw-7mvq
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>