Chore(deps-dev): Bump @nextcloud/cypress

Bumps [@nextcloud/cypress](https://github.com/nextcloud/nextcloud-cypress) from 1.0.0-beta.13 to 1.0.0-beta.15.
- [Release notes](https://github.com/nextcloud/nextcloud-cypress/releases)
- [Commits](nextcloud-libraries/nextcloud-e2e-test-server@v1.0.0-beta.13...v1.0.0-beta.15)

---
updated-dependencies:
- dependency-name: "@nextcloud/cypress"
  dependency-version: 1.0.0-beta.15
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]