chore(deps): update image ghcr.io/kumbuka-me/kumbuka to v0.13.0

[renovate]

This PR contains the following updates:

Package	Update	Change
ghcr.io/kumbuka-me/kumbuka	minor	v0.7.0 → v0.13.0

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Release Notes

kumbuka-me/kumbuka (ghcr.io/kumbuka-me/kumbuka)

v0.13.0

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Changelog

• b3f1d3f feat: support typed plugin settings
• 6949acf fix: tighten plugin resource and http validation
• 224a12c fix: make plugin settings persistence atomic

v0.12.0

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Changelog

• 0d60862 style(ui): simplify administration surfaces
• 072eb10 style(ui): refine shared button controls
• 0f762d1 fix(admin): align plugin update interval label

v0.11.0

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Changelog

• 072eb10 style(ui): refine shared button controls
• 0f762d1 fix(admin): align plugin update interval label
• b01326a feat(plugins): schedule update discovery and notify admins

v0.9.0

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Changelog

• 79d6a41 refactor(handler): remove stale saved search reader
• 94495e4 test(webview): move plugin feature tests with presentation logic
• 301f59a fix(webview): build plugin data for shared pages

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