Bump github.com/opencontainers/image-spec

Bumps [github.com/opencontainers/image-spec](https://github.com/opencontainers/image-spec) from 1.0.2-0.20190823105129-775207bd45b6 to 1.1.0.
- [Release notes](https://github.com/opencontainers/image-spec/releases)
- [Changelog](https://github.com/opencontainers/image-spec/blob/main/RELEASES.md)
- [Commits](https://github.com/opencontainers/image-spec/commits/v1.1.0)

---
updated-dependencies:
- dependency-name: github.com/opencontainers/image-spec
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -16,7 +16,7 @@ require (
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.15.2
 	github.com/manifoldco/promptui v0.9.0
 	github.com/olekukonko/tablewriter v0.0.5
-	github.com/opencontainers/image-spec v1.0.2-0.20190823105129-775207bd45b6
+	github.com/opencontainers/image-spec v1.1.0
 	github.com/opencontainers/umoci v0.4.6
 	github.com/pkg/errors v0.9.1
 	github.com/sassoftware/go-rpmutils v0.2.0