feat: update appVersion to 29.0.1

[terop]

Pull Request

Description of the change

Update to the latest version of Nextcloud.

Benefits

Get the latest fixes.

Possible drawbacks

There may be regressions.

Checklist

• [x] DCO has been signed off on the commit.
• [x] Chart version bumped in Chart.yaml according to semver.
• [ ] (optional) Variables are documented in the README.md

[provokateurin]

Thanks :blue_heart: