build(deps): Bump @nextcloud/auth from 2.5.3 to 2.6.0

Bumps [@nextcloud/auth](https://github.com/nextcloud-libraries/nextcloud-auth) from 2.5.3 to 2.6.0.
- [Release notes](https://github.com/nextcloud-libraries/nextcloud-auth/releases)
- [Changelog](https://github.com/nextcloud-libraries/nextcloud-auth/blob/main/CHANGELOG.md)
- [Commits](nextcloud-libraries/nextcloud-auth@v2.5.3...v2.6.0)

---
updated-dependencies:
- dependency-name: "@nextcloud/auth"
  dependency-version: 2.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -14,7 +14,7 @@
     "stylelint:fix": "stylelint css/*.css css/*.scss src/**/*.scss src/**/*.vue --fix"
   },
   "dependencies": {
-    "@nextcloud/auth": "^2.5.3",
+    "@nextcloud/auth": "^2.6.0",
     "@nextcloud/axios": "^2.5.1",
     "@nextcloud/capabilities": "^1.2.1",
     "@nextcloud/dialogs": "^6.3.1",