Update Helm release seafile to v0.12.0

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
seafile	minor	0.11.3 -> 0.12.0

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Release Notes

300481/seafile-server (seafile)

### [`v0.12.0`](https://togithub.com/300481/seafile-server/compare/0.11.3...0.12.0) [Compare Source](https://togithub.com/300481/seafile-server/compare/0.11.3...0.12.0)

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Configuration

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