build(deps-dev): bump @nextcloud/cypress

Bumps [@nextcloud/cypress](https://github.com/nextcloud/nextcloud-cypress) from 1.0.0-beta.14 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.14...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
...

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

Author: dependabot[bot]

package-lock.json

@@ -126,7 +126,7 @@
     "@cypress/vue2": "^2.1.1",
     "@cypress/webpack-preprocessor": "^6.0.4",
     "@nextcloud/babel-config": "^1.2.0",
-    "@nextcloud/cypress": "^1.0.0-beta.14",
+    "@nextcloud/cypress": "^1.0.0-beta.15",
     "@nextcloud/eslint-config": "^8.4.2",
     "@nextcloud/stylelint-config": "^3.0.1",
     "@nextcloud/typings": "^1.9.1",