fix: bmff update manifest support

[mauricefisher64]

Changes in this pull request

This change add support for C2PA 2.2 changes to how we handle update manifests in for BMFF bases assest.

Checklist

• This PR represents a single feature, fix, or change.
• All applicable changes have been documented.
• Any TO DO items (or similar) have been entered as GitHub issues and the link to that issue has been included in a comment.

[codecov]

Codecov Report

❌ Patch coverage is 93.35443% with 21 lines in your changes missing coverage. Please review.
✅ Project coverage is 78.22%. Comparing base (c4cfc2a) to head (b7511a7).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
sdk/src/asset_handlers/bmff_io.rs	92.65%	13 Missing ⚠️
sdk/src/assertions/bmff_hash.rs	63.63%	4 Missing ⚠️
sdk/src/cose_validator.rs	89.47%	2 Missing ⚠️
sdk/src/store.rs	98.16%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1284      +/-   ##
==========================================
+ Coverage   78.04%   78.22%   +0.18%     
==========================================
  Files         150      150              
  Lines       38354    38616     +262     
==========================================
+ Hits        29933    30209     +276     
+ Misses       8421     8407      -14     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[ok-nick]

Looks good to me, just a few questions. Clever design by the spec too.

[tmathern]

Clippy seems unhappy - not sure if this is due to the Rust update or not (I think not, since it ran after the new Rust version happened?).