www/grafana8: Update to 8.0.5

Changes

• https://github.com/grafana/grafana/releases/tag/v8.0.3
• https://github.com/grafana/grafana/releases/tag/v8.0.4
• https://github.com/grafana/grafana/releases/tag/v8.0.5

PR: 257152
(cherry picked from commit 758abb5485aacb8ae82fecc6bbb3521cd2faaf8b)