backrest: Add restic dependency

[eawd123wadd4354as243df]

On windows, restic is not installed by when running backrest for the first time.
Added the required dependency.

• Use conventional PR title: <manifest-name[@version]|chore>: <general summary of the pull request>
• I have read the Contributing Guide

Summary by CodeRabbit

• Chores
  • Added a runtime dependency declaration for restic in the package manifest, ensuring restic is installed and available at runtime. This change updates the package metadata to include restic as a required dependency.

[coderabbitai]

Walkthrough

Added a top-level depends field with the string value "restic" to bucket/backrest.json, placed after the "license" field; one line added.

Changes

Cohort / File(s)	Summary
Manifest Dependency Declaration bucket/backrest.json	Inserted top-level depends field set to "restic" (one-line addition) in the package manifest.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Suggested labels

review-needed

Poem

🐰 A small new line I penned with care,
"restic" now waits within the lair.
A manifest tidy, neat and bright,
Hop we fixed it — snug and right.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description includes the required conventional PR title checkbox, confirms reading the Contributing Guide, and provides context about the restic dependency issue on Windows.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Title check	✅ Passed	The title 'backrest: Add restic dependency' directly and clearly describes the main change: adding restic as a dependency to backrest.

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

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[github-actions]

Your changes did not pass all checks.

Please address the issues in the manifest and comment starting with /verify to rerun the checks.

backrest

• Lint
• Description
• License
• Hashes
• Checkver
• Autoupdate
• Autoupdate Hash Extraction

Check the full log for details.

[z-Fng]

/verify

[github-actions]

All changes look good.

Wait for review from human collaborators.

backrest

• Lint
• Description
• License
• Hashes
• Checkver
• Autoupdate
• Autoupdate Hash Extraction

Check the full log for details.

[z-Fng]

Thanks for your contribution!