v2.12.0

This release adds support for accessing OCI artifacts encapsulated within a SIF.

Specifically, the following APIs have been added:

• func (Descriptor) OCIBlobDigest: returns the digest for a OCI blob.
• func WithOCIBlobDigest: selects descriptor(s) that contain a OCI blob with the specified digest.

What's Changed

• OCI data types by @wobito in #301
• build(deps): bump github.com/sigstore/sigstore from 1.6.5 to 1.7.0 by @dependabot in #305
• refactor: OCI blob digest by @tri-adam in #306
• test: add testing against Go 1.21 RC by @tri-adam in #307
• build(deps): bump github.com/sigstore/sigstore from 1.7.0 to 1.7.1 by @dependabot in #308
• test: sign/verify round trip for high level tests by @tri-adam in #310
• deps: bump github.com/ProtonMail/go-crypto by @tri-adam in #311
• build(deps): bump github.com/secure-systems-lab/go-securesystemslib from 0.6.0 to 0.7.0 by @dependabot in #312
• fix: ensure hash function is available by @tri-adam in #314
• build(deps): bump github.com/google/go-containerregistry from 0.15.2 to 0.16.1 by @dependabot in #315
• build(deps): bump github.com/sigstore/sigstore from 1.7.1 to 1.7.2 by @dependabot in #316

Full Changelog: v2.11.5...v2.12.0