fix: renovate for github runners

[AlexHardAtWork]

What

Enables Renovate for Github Runners.

Part of #odd-internal/28.

Why

Runners need updates.

Testing

Not tested.

Notes for reviewers

...

Checklist

• Tests added/updated
• No breaking changes (or upgrade path documented above)
• Readable commit history (squashed and cleaned up as desired)
• AI code review considered and comments resolved

Summary by CodeRabbit

• Chores
  • Enhanced dependency management configuration to better support GitHub Actions runner updates, enabling automatic detection and tracking of runner versions across workflows.

[coderabbitai]

📝 Walkthrough

Walkthrough

Renovate configuration now includes a custom manager that detects GitHub Actions runner specifications in workflow runs-on fields, extracts the runner label and version information via regex, and applies version updates from the github-runners datasource using Docker versioning.

Changes

GitHub Actions Runner Version Management

Layer / File(s)	Summary
Custom manager for GitHub Actions runner version tracking renovate.json	Added a regex-based customManagers entry that matches workflow runs-on patterns to extract runner names and versions, routing updates through the github-runners datasource with docker versioning.

🎯 2 (Simple) | ⏱️ ~10 minutes

🐰 A runner hops into the config,
Its version tagged with docker's magic,
Renovate now keeps it fresh and spry,
With regex patterns that don't pass by!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the main change: adding Renovate support for GitHub Runners to the renovate.json configuration.
Description check	✅ Passed	The description covers main sections but lacks sufficient detail in critical areas; 'Testing: Not tested' and sparse reviewer notes are concerning.
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.

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

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/28-renovate-github-runners

---

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.}

[yocaba]

@coderabbitai review

[coderabbitai]

✅ Actions performed

Review triggered.

Note: CodeRabbit is an incremental review system and does not re-review already reviewed commits. This command is applicable only when automatic reviews are paused.

[coderabbitai]

🧹 Nitpick comments (1)

renovate.json (1)

54-54: ⚡ Quick win

Broaden the runs-on regex to cover quoted and suffixed runner labels.

Current pattern can miss common workflow forms like runs-on: "ubuntu-24.04" and runs-on: ubuntu-24.04-arm, which limits update coverage.

Proposed diff

-        "runs-on:\\s*(?<depName>\\w+)-(?<currentValue>[\\d.]+)"
+        "runs-on:\\s*[\"']?(?<depName>[A-Za-z][A-Za-z-]*)-(?<currentValue>\\d+(?:\\.\\d+){1,2})(?:-[A-Za-z0-9_-]+)?[\"']?"

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@renovate.json` at line 54, The current regex string
"runs-on:\s*(?<depName>\w+)-(?<currentValue>[\d.]+)" is too narrow; update that
value in renovate.json to allow optional surrounding quotes and optional
hyphenated suffixes (like -arm) after the version. Replace the pattern so it
accepts an optional quote before/after the whole runner label, keeps the named
groups depName and currentValue, and permits extra -suffix segments after the
numeric version (e.g., use optional ["']? and a non-capturing (?:-[\w-]+)? for
suffixes while preserving (?<depName>\w+) and (?<currentValue>[\d.]+)).

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Nitpick comments:
In `@renovate.json`:
- Line 54: The current regex string
"runs-on:\s*(?<depName>\w+)-(?<currentValue>[\d.]+)" is too narrow; update that
value in renovate.json to allow optional surrounding quotes and optional
hyphenated suffixes (like -arm) after the version. Replace the pattern so it
accepts an optional quote before/after the whole runner label, keeps the named
groups depName and currentValue, and permits extra -suffix segments after the
numeric version (e.g., use optional ["']? and a non-capturing (?:-[\w-]+)? for
suffixes while preserving (?<depName>\w+) and (?<currentValue>[\d.]+)).

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: e1451d80-e36d-427c-a6f9-d32a9b1667e9

📥 Commits

Reviewing files that changed from the base of the PR and between 004b4d2 and f43d948.

📒 Files selected for processing (1)

• renovate.json