Bump github.com/containerd/containerd from 1.4.1 to 1.6.26 (#21)

Bumps [github.com/containerd/containerd](https://github.com/containerd/containerd) from 1.4.1 to 1.6.26.
- [Release notes](https://github.com/containerd/containerd/releases)
- [Changelog](https://github.com/containerd/containerd/blob/main/RELEASES.md)
- [Commits](containerd/containerd@v1.4.1...v1.6.26)

---
updated-dependencies:
- dependency-name: github.com/containerd/containerd
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -3,21 +3,10 @@ module github.com/mergermarket/cdflow-release-docker-ecr
 go 1.13
 
 require (
-	github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 // indirect
 	github.com/aws/aws-sdk-go v1.34.0
-	github.com/containerd/containerd v1.4.1 // indirect
+	github.com/containerd/containerd v1.6.26 // indirect
 	github.com/docker/distribution v2.8.2+incompatible
 	github.com/docker/docker v1.4.2-0.20191101170500-ac7306503d23
-	github.com/docker/go-connections v0.4.0 // indirect
-	github.com/docker/go-metrics v0.0.1 // indirect
-	github.com/docker/go-units v0.4.0 // indirect
 	github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7 // indirect
-	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/gorilla/mux v1.8.0 // indirect
-	github.com/morikuni/aec v1.0.0 // indirect
-	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
-	github.com/opencontainers/image-spec v1.0.1 // indirect
-	github.com/sirupsen/logrus v1.6.0 // indirect
-	google.golang.org/grpc v1.56.3 // indirect
-	gotest.tools v2.2.0+incompatible // indirect
 )