update containerd binary to v1.6.6
Welcome to the v1.6.6 release of containerd!
The sixth patch release for containerd 1.6 includes a fix for
[CVE-2022-31030](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-31030).
Notable Updates
- Fix ExecSync handler to cap console output size ([GHSA-5ffw-gxpp-mxpf](https://github.com/containerd/containerd/security/advisories/GHSA-5ffw-gxpp-mxpf))
full diff: https://github.com/containerd/containerd/compare/v1.6.5...v1.6.6
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>