fix(nextcloud): set maintenance window and disable logreader

[christophenne]

Pull Request Template

Description

• Disable the logreader app to avoid the log iterator error.
• set the maintenance window such that maintenance tasks are done during night.

Related Issues

• Related to Nextcloud 30 support #562

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Checklist

• I have read and followed the contributing guidelines for this repository.
• My code follows the coding style and standards of this project.
• I have tested my changes locally.
• I have added or updated necessary documentation (if applicable).
• All new and existing tests passed.
• My changes have been reviewed by at least one other contributor.
• I have updated the README or relevant documentation (if applicable).
• I have added proper labels to this PR (e.g., bug, enhancement, documentation, etc.).

Additional Information

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