MFH: r561809

www/moinmoin: update 1.9.10 -> 1.9.11

• with security fixes for CVE-2020-25074, CVE-2020-15275

PR: 252682
Relnotes: https://github.com/moinwiki/moin-1.9/blob/1.9.11/docs/CHANGES#L13
Security: CVE-2020-25074, CVE-2020-15275