[20.10] update containerd binary to v1.6.11

Welcome to the v1.6.11 release of containerd!

The eleventh patch release for containerd 1.6 contains a various fixes and updates.

Notable Updates

- Add pod UID annotation in CRI plugin
- Fix nil pointer deference for Windows containers in CRI plugin
- Fix lease labels unexpectedly overwriting expiration
- Fix for simultaneous diff creation using the same parent snapshot

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

hack/dockerfile/install/containerd.installer

@@ -15,7 +15,7 @@ set -e
 # the binary version you may also need to update the vendor version to pick up
 # bug fixes or new APIs, however, usually the Go packages are built from a
 # commit from the master branch.
-: "${CONTAINERD_VERSION:=v1.6.10}"
+: "${CONTAINERD_VERSION:=v1.6.11}"
 
 install_containerd() (
 	echo "Install containerd version $CONTAINERD_VERSION"