chore(deps): favor re-exported digest crate

[hanabi1224]

Summary of changes

This PR removes digest from Cargo.toml to avoid managing its version. (Upgrading to the latest 0.11 causes build errors)

Changes introduced in this pull request:

Reference issue to close (if applicable)

Closes

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation. All new code adheres to the team's documentation standards,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.

Outside contributions

• I have read and agree to the CONTRIBUTING document.
• I have read and agree to the AI Policy document. I understand that failure to comply with the guidelines will lead to rejection of the pull request.

Summary by CodeRabbit

• Chores
  • Removed unused digest dependency to streamline the dependency tree
  • Updated development dependency versions for tooling improvements
  • Reorganized internal imports across modules to consolidate cryptographic dependency usage

[coderabbitai]

Walkthrough

This PR removes the digest crate dependency from the project and replaces all references to its Digest trait with imports from the sha2 crate's digest module. It also bumps the ra_ap_syntax dev-dependency to version 0.0.319.

Changes

Cohort / File(s)	Summary
Dependency Updates Cargo.toml	Removed digest = "0.10" dependency; bumped ra_ap_syntax dev-dependency from "0.0.318" to "0.0.319".
Digest Trait Import Migration src/beacon/beacon_entries.rs, src/chain/mod.rs, src/state_manager/utils.rs, src/utils/io/writer_checksum.rs	Updated imports to source Digest trait from sha2::digest instead of the digest crate, with no changes to control flow or public APIs.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Suggested labels

dependencies, rust

Suggested reviewers

• LesnyRumcajs
• akaladarshi

🚥 Pre-merge checks | ✅ 3 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'chore(deps): favor re-exported digest crate' accurately describes the main change: removing the direct digest dependency and using the re-exported version from sha2 instead.
Merge Conflict Detection	✅ Passed	✅ No merge conflicts detected when merging into main

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch hm/no-digest

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No actionable comments were generated in the recent review. 🎉

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 63.36%. Comparing base (e7ad657) to head (99a536a).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

Files with missing lines	Coverage Δ
src/beacon/beacon_entries.rs	100.00% <ø> (ø)
src/chain/mod.rs	74.75% <ø> (ø)
src/state_manager/utils.rs	79.56% <ø> (-0.25%)	⬇️
src/utils/io/writer_checksum.rs	82.88% <ø> (ø)

... and 11 files with indirect coverage changes

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