build(deps): bump oras.land/oras-go from 1.1.1 to 1.2.0 (#4785)

Bumps [oras.land/oras-go](https://github.com/oras-project/oras-go) from 1.1.1 to 1.2.0.
- [Release notes](https://github.com/oras-project/oras-go/releases)
- [Commits](https://github.com/oras-project/oras-go/compare/v1.1.1...v1.2.0)

---
updated-dependencies:
- dependency-name: oras.land/oras-go
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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