Revert "[20.10] update containerd binary to v1.4.5"

This reverts commit 01f734cb4f432760fc94a0fb6f64207628ca0662.

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

hack/dockerfile/install/containerd.installer

@@ -4,7 +4,7 @@ set -e
 # containerd is also pinned in vendor.conf. When updating the binary
 # version you may also need to update the vendor version to pick up bug
 # fixes or new APIs.
-: "${CONTAINERD_COMMIT:=8263eb3eaee447b16856eeb8839d5df4c9cca71a}" # v1.4.5
+: "${CONTAINERD_COMMIT:=05f951a3781f4f2c1911b05e61c160e9c30eaa8e}" # v1.4.4
 
 install_containerd() (
 	echo "Install containerd version $CONTAINERD_COMMIT"