chore: bump version to 0.3.13

[lorenjphillips]

Bump version for release.

Includes since 0.3.12:

• feat: add --test-cases flag to runs launch #66 --test-cases flag on coval runs launch
• [RUN-356] Validate --test-cases bounds and reject empty values #67 client-side validation for --test-cases (1-100 cap, reject empty tokens)

Summary by CodeRabbit

• Chores
  • Version updated to 0.3.13

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 00ff38c8-1dec-4ec7-9f21-b4bfcef197dd

📥 Commits

Reviewing files that changed from the base of the PR and between cef8960 and 16ca30e.

⛔ Files ignored due to path filters (1)

• Cargo.lock is excluded by !**/*.lock

📒 Files selected for processing (1)

• Cargo.toml

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📝 Walkthrough

Walkthrough

The coval Rust crate version in Cargo.toml is incremented from 0.3.12 to 0.3.13. No dependency declarations, build profiles, or other metadata are altered.

Changes

Version Release

Layer / File(s)	Summary
Package Version Cargo.toml	Crate version field updated from 0.3.12 to 0.3.13.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~1 minute

Poem

🐰 A version hops from .12 to .13,
A tiny bump, both clean and keen,
No breaking changes, just a number's climb,
Cargo blesses this release in time! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'chore: bump version to 0.3.13' directly and clearly describes the main change in the pull request, which is a version bump from 0.3.12 to 0.3.13 as shown in Cargo.toml.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch release/v0.3.13

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