MFH: r531628 r531630 r531632 r535076 r535874 r535993 r535995

net-mgmt/zabbix44-*: update 4.4.5 -> 4.4.7

PR: 245588
Submitted by: pg@pakhom.spb.ru (maintainer)
Relnotes: https://www.zabbix.com/rn/rn4.4.7

net-mgmt/zabbix4-server: update 4.0.17 -> 4.0.19

PR: 245589
Submitted by: pg@pakhom.spb.ru (maintainer)
Relnotes: https://www.zabbix.com/rn/rn4.0.19

net-mgmt/zabbix3-server: upgrade 3.0.29 -> 3.0.30

PR: 245591
Submitted by: pg@pakhom.spb.ru (maintainer)
Relnotes: https://www.zabbix.com/rn/rn3.0.30

net-mgmt/zabbix*-server: Fix build with LIBXML2 option

PR: 245613
Submitted by: Juraj Lutter <juraj@lutter.sk>
Reported by: Christian Ullrich <chris@chrullrich.net>
Approved by: maintainer timeout (pg@pakhom.spb.ru, > 3 weeks)

net-mgmt/zabbix44-*: Update to 4.4.8

Changelog: https://www.zabbix.com/rn/rn4.4.8

PR: 245995
Approved by: Pakhom Golynga <pg@pakhom.spb.ru> (maintainer)

net-mgmt/zabbix3-*: Update to 3.0.31

Changelog: https://www.zabbix.com/rn/rn3.0.31

PR: 246582
Approved by: Pakhom Golynga <pg@pakhom.spb.ru> (maintainer)
X-MFH-with: 531632, 535076
Security: 4d11d37e-9a8d-11ea-b9b8-641c67a117d8

net-mgmt/zabbix4-*: Update to 4.0.20

Changelog: https://www.zabbix.com/rn/rn4.0.20

PR: 246583
Approved by: Pakhom Golynga <pg@pakhom.spb.ru> (maintainer)

Approved by: ports-secteam (joneum)