libredb-studio: refresh the pinned tag to 0.15.0 and declare supported architectures

[yusuf-gundogdu]

Bumps the LibreDB Studio service from 0.9.27 to the current release 0.9.59, and fills in the template.architecture annotation, which was left empty. docker manifest inspect ghcr.io/libredb/libredb-studio:0.9.59 returns both linux/amd64 and linux/arm64, so ARM users were being filtered out unnecessarily.

Verified before submitting: the service's own defaults from app.yaml (image, env vars, volume mount, container port) were run locally on 0.9.59. The health endpoint is green, login works with the template's default admin credentials, and a saved connection survives a container restart. The run was on aarch64, which also confirms the arm64 claim. yamllint -c services/.yamllint reports no new issues (the one line-length warning predates this change).

[yusuf-gundogdu]

Hey @mms-gianni, I think this one is only waiting on your review to unblock now. It's the LibreDB Studio template bumped to 0.9.59 plus the supported arches, branch is current with main so nothing to rebase. Could you give it a look when you're next in the repo? Happy to change anything that looks off.

[cevheri]

any update ?

[yusuf-gundogdu]

Refreshed the pinned tag to 0.14.1. The branch still targeted 0.9.59 from July, so merging it as it stood would have shipped a stale image to Kubero users.

The image is ghcr.io/libredb/libredb-studio:0.14.1, published as a multi-arch manifest for linux/amd64 and linux/arm64, which matches the architecture annotation this PR adds. The diff is still a single line in services/libredb-studio/app.yaml.

No rush on our side. If anything about the template needs changing before it can go in, tell me and I will adjust it.