www/grafana8: Update to 8.5.27

• Set as deprecated after Grafana 10 released.

ChangeLog:
https://grafana.com/blog/2023/06/22/grafana-security-release-for-cve-2023-3128/

PR: 272161
MFH: 2023Q2
Security: fdbe9aec-118b-11ee-908a-6c3be5272acd
(cherry picked from commit 86d7d344b5e08dc28360f56dbce86354bcbfac82)