Add weekly schedule to reduce Renovate update frequency

[Copilot]

Renovate was running continuously with default config:recommended settings, creating PRs whenever updates were available.

Changes

• Added schedule configuration to limit Renovate runs to once weekly (before 6am Monday, Asia/Tokyo timezone)
• Removed automergeSchedule to allow PRs to merge immediately after pipelines pass

{
  "schedule": [
    "before 6am on Monday"
  ],
  "automerge": true,
  "timezone": "Asia/Tokyo",
  ...
}

This reduces update frequency from continuous to weekly while maintaining regular dependency updates. PRs created by Renovate will now be automatically merged as soon as tests pass, rather than waiting for specific time windows.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Reduce the frequency of renovate</issue_title>
<issue_description></issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Reduce the frequency of renovate #934

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[HackingGate]

@copilot
You can keep schedule and automergeSchedule almost the same, or remove automergeSchedule, let it merge as soon as pipelines passed.

[Copilot]

@copilot
You can keep schedule and automergeSchedule almost the same, or remove automergeSchedule, let it merge as soon as pipelines passed.

Removed automergeSchedule in da7326b. PRs will now merge immediately after pipelines pass.

[coderabbitai]

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[Copilot]

Pull request overview

This PR configures Renovate to run on a weekly schedule instead of continuously, reducing the frequency of dependency update PRs while maintaining automated dependency management. The change addresses issue #934 to reduce Renovate's update frequency.

Key Changes:

• Added a schedule field to limit Renovate runs to once weekly (before 6am Monday, Asia/Tokyo timezone)
• Removed automergeSchedule to allow PRs to merge immediately after CI passes instead of waiting for specific time windows
• Reformatted the extends array to multi-line format for consistency

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