build(deps): bump oras from 0.2.37 to 0.2.38

Bumps [oras](https://github.com/oras-project/oras-py) from 0.2.37 to 0.2.38.
- [Release notes](https://github.com/oras-project/oras-py/releases)
- [Changelog](https://github.com/oras-project/oras-py/blob/main/CHANGELOG.md)
- [Commits](https://github.com/oras-project/oras-py/commits)

---
updated-dependencies:
- dependency-name: oras
  dependency-version: 0.2.38
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]