www/grafana: Update 12.4.2 => 13.0.1

Release notes:
https://grafana.com/docs/grafana/latest/whatsnew/whats-new-in-v13-0

Changelogs:
https://github.com/grafana/grafana/releases/tag/v12.4.3
https://github.com/grafana/grafana/releases/tag/v13.0.1

PR: 294695
Sponsored by: UNIS Labs