Bump imgutil to latest and docker from v27.5.1 to v28.3.0

[jericop]

Summary

This change updates docker library from v27.5.1 to v28.3.0 in order to match what is used in imgutil. This is necessary for any projects that use pack as a library, such as jam, because there are removed types and other changes which cause build and test errors unless everything is using the same version. It also removes DSA as a supported key type from sshdialer.

Output

Before

After

Documentation

• Should this change be documented?
  • Yes, see #___
  • No

Related

Resolves #___

[jjbustamante]

Approved: Docker v27.5.1 → v28.3.0 Interface Migration

Summary

This PR successfully migrates from deprecated Docker interfaces to their v28.3.0 replacements. The changes are primarily structural with minimal functional impact.

Key Changes Reviewed

✅ CommonAPIClient → APIClient: Clean migration across 19 files with no functional differences
✅ ImageInspectWithRaw → ImageInspect: Simplified API - raw bytes were unused in all locations
✅ DSA SSH Key Removal: Security improvement removing deprecated DSA support

Impact Assessment

• Low Risk: Interface changes are structural only
• Breaking Change: DSA users need to migrate to RSA/ECDSA/Ed25519 keys
• Library Compatibility: Critical for jam and other pack library consumers

Verification

• All deprecated interface usage patterns identified and replaced
• Good abstraction layer in pkg/client/docker.go isolates changes
• imgutil alignment ensures library compatibility

The migration is clean and necessary for maintaining compatibility with projects using pack as a library.