www/grafana{8,9}: Update to 8.5.9 and 9.0.4 (Fixes security vulnerability)

ChangeLog:

• https://github.com/grafana/grafana/releases/tag/v8.5.9
• https://github.com/grafana/grafana/releases/tag/v9.0.3
• https://github.com/grafana/grafana/releases/tag/v9.0.4

PR: 265330
(cherry picked from commit 472a9324f10ad89b68c3981e6d5f25c27a6d5005)