chore(deps): Bump github.com/containerd/containerd from 1.4.3 to 1.4.4

Bumps [github.com/containerd/containerd](https://github.com/containerd/containerd) from 1.4.3 to 1.4.4.
- [Release notes](https://github.com/containerd/containerd/releases)
- [Changelog](https://github.com/containerd/containerd/blob/master/RELEASES.md)
- [Commits](https://github.com/containerd/containerd/compare/v1.4.3...v1.4.4)

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -11,7 +11,7 @@ require (
 	github.com/Masterminds/squirrel v1.5.0
 	github.com/Masterminds/vcs v1.13.1
 	github.com/asaskevich/govalidator v0.0.0-20200428143746-21a406dcc535
-	github.com/containerd/containerd v1.4.3
+	github.com/containerd/containerd v1.4.4
 	github.com/cyphar/filepath-securejoin v0.2.2
 	github.com/deislabs/oras v0.10.0
 	github.com/docker/distribution v2.7.1+incompatible

go.sum

@@ -139,6 +139,8 @@ github.com/containerd/console v0.0.0-20180822173158-c12b1e7919c1/go.mod h1:Tj/on
 github.com/containerd/containerd v1.3.2/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
 github.com/containerd/containerd v1.4.3 h1:ijQT13JedHSHrQGWFcGEwzcNKrAGIiZ+jSD5QQG07SY=
 github.com/containerd/containerd v1.4.3/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
+github.com/containerd/containerd v1.4.4 h1:rtRG4N6Ct7GNssATwgpvMGfnjnwfjnu/Zs9W3Ikzq+M=
+github.com/containerd/containerd v1.4.4/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
 github.com/containerd/continuity v0.0.0-20190426062206-aaeac12a7ffc/go.mod h1:GL3xCUCBDV3CZiTSEKksMWbLE66hEyuu9qyDOOqM47Y=
 github.com/containerd/continuity v0.0.0-20201208142359-180525291bb7 h1:6ejg6Lkk8dskcM7wQ28gONkukbQkM4qpj4RnYbpFzrI=
 github.com/containerd/continuity v0.0.0-20201208142359-180525291bb7/go.mod h1:kR3BEg7bDFaEddKm54WSmrol1fKWDU1nKYkgrcgZT7Y=