Bump github.com/containers/storage from 1.27.0 to 1.28.0

Bumps [github.com/containers/storage](https://github.com/containers/storage) from 1.27.0 to 1.28.0.
- [Release notes](https://github.com/containers/storage/releases)
- [Changelog](https://github.com/containers/storage/blob/master/docs/containers-storage-changes.md)
- [Commits](containers/storage@v1.27.0...v1.28.0)

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

go.mod

@@ -4,9 +4,8 @@ go 1.15
 
 require (
 	github.com/BurntSushi/toml v0.3.1
-	github.com/blang/semver v3.5.1+incompatible // indirect
 	github.com/containers/image/v5 v5.10.5
-	github.com/containers/storage v1.27.0
+	github.com/containers/storage v1.28.0
 	github.com/docker/distribution v2.7.1+incompatible
 	github.com/docker/docker v17.12.0-ce-rc1.0.20201020191947-73dc6a680cdd+incompatible
 	github.com/docker/go-units v0.4.0
@@ -20,13 +19,12 @@ require (
 	github.com/opencontainers/runtime-tools v0.9.0
 	github.com/opencontainers/selinux v1.8.0
 	github.com/pkg/errors v0.9.1
-	github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4 // indirect
 	github.com/seccomp/libseccomp-golang v0.9.2-0.20200616122406-847368b35ebf
 	github.com/sirupsen/logrus v1.8.1
 	github.com/spf13/cobra v1.1.3
 	github.com/spf13/pflag v1.0.5
 	github.com/stretchr/testify v1.7.0
 	github.com/syndtr/gocapability v0.0.0-20200815063812-42c35b437635
-	golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9
-	golang.org/x/sys v0.0.0-20210112080510-489259a85091
+	golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0
+	golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c
 )