build(deps): bump quasar from 2.5.5 to 2.6.0 in /frontend

Bumps [quasar](https://github.com/quasarframework/quasar) from 2.5.5 to 2.6.0.
- [Release notes](https://github.com/quasarframework/quasar/releases)
- [Commits](https://github.com/quasarframework/quasar/compare/quasar-v2.5.5...quasar-v2.6.0

)

---
updated-dependencies:
- dependency-name: quasar
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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