Bump nextcloud/coding-standard from 0.3.0 to 0.4.0

Bumps [nextcloud/coding-standard](https://github.com/nextcloud/coding-standard) from 0.3.0 to 0.4.0.
- [Release notes](https://github.com/nextcloud/coding-standard/releases)
- [Changelog](https://github.com/nextcloud/coding-standard/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nextcloud/coding-standard/compare/v0.3.0...v0.4.0

)

Signed-off-by: dependabot[bot] <support@github.com>