ci: update showcase (#1933)

Co-authored-by: Sarah Rainsberger <[email protected]>

Author: astrobot-houston

src/content/showcase/all-contributors.github.io.webp

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+title: All Contributors Bot
+image: ./all-contributors.github.io.webp
+url: https://all-contributors.github.io/
+dateAdded: 2025-10-28T11:03:40.946Z
+categories:
+  - starlight

src/content/showcase/all-contributors.github.io.yml

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+title: Colanode - Open-source & local-first collaboration infrastructure
+image: ./colanode.com.webp
+url: https://colanode.com/
+dateAdded: 2025-10-28T11:03:11.527Z

src/content/showcase/colanode.com.webp

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+title: David Osipov | Rooted in Strategy, Branching into Innovation
+image: ./david-osipov.vision.webp
+url: https://david-osipov.vision/en/
+dateAdded: 2025-10-28T11:03:11.527Z

src/content/showcase/colanode.com.yml

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+title: Geniestudio
+image: ./geniestudio.app.webp
+url: https://geniestudio.app/
+dateAdded: 2025-10-28T11:03:14.370Z

src/content/showcase/david-osipov.vision.webp

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+title: Gitea Mirror - Automated GitHub to Gitea Repository Mirroring & Backup
+image: ./giteamirror.com.webp
+url: https://giteamirror.com/
+dateAdded: 2025-10-28T11:03:38.493Z