www/grafana8: security update to 8.5.22

https://grafana.com/blog/2023/03/22/grafana-security-release-new-versions-with-security-fixes-for-cve-2023-1410/

PR: 270562
Approved by: Boris Korzun (maintainer)
MFH: 2023Q2
Security: 955eb3cc-ce0b-11ed-825f-6c3be5272acd

(cherry picked from commit d83c498e9b35b08257651d5a841993dc23c3abda)