Bump christophwurst/nextcloud from 18.0.2 to 18.0.4
Bump christophwurst/nextcloud from 18.0.2 to 18.0.4

Bumps [christophwurst/nextcloud](https://github.com/ChristophWurst/nextcloud_composer) from 18.0.2 to 18.0.4.
- [Release notes](https://github.com/ChristophWurst/nextcloud_composer/releases)
- [Commits](https://github.com/ChristophWurst/nextcloud_composer/compare/v18.0.2...v18.0.4)

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