Update to the current v1.6 release, which deprecated the errdefs
package in favor of the separate github.com/containerd/errdefs
module, which is now an alias.

Update the minimum required version to prevent consumers from using
an older version, and thus incompatible errdefs definitions, and change
all uses of the deprecated package to use the module directly.

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

Signed-off-by: Kirtana Ashok <kiashok@microsoft.com>

Update containerd version 1.6.36
Update golang version to 1.21.x
Fix lint errors

Signed-off-by: Kirtana Ashok <kiashok@microsoft.com>

Signed-off-by: Maksim An <maksiman@microsoft.com>
(cherry picked from commit fe8c673)
Signed-off-by: Kirtana Ashok <kiashok@microsoft.com>

(cherry picked from commit 166e62a)

Signed-off-by: ritikaguptams <85255050+ritikaguptams@users.noreply.github.com>