community/grafana: security upgrade to 7.4.5...
community/grafana: security upgrade to 7.4.5 (CVE-2021-28146,CVE-2021-28147,CVE-2021-28148,CVE-2021-27962)
Also replace chmod-clean with -modcacherw
Ref https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-4-5/
Edited by Andy Postnikov