www/mod_wsgi4: Update from 4.5.18 to 4.5.22

Pet portlint

Changelog: https://modwsgi.readthedocs.io/en/develop/release-notes/version-4.5.22.html

PR: 223861
Submitted by: douglas@douglasthrift.net (maintainer)
Approved by: xxx (mentor)
#Differential Revision: https://reviews.freebsd.org/Dxxxxx

~...www/mod_wsgi4: portlint -AC
WARN: Makefile: Consider adding support for a NLS knob to conditionally disable gettext support.
WARN: Makefile: for new port, make $FreeBSD$ tag in comment section empty, to make SVN happy.
0 fatal errors and 2 warnings found.

poudriere testport:

10.3-amd64
10.3-i386
10.4-amd64
10.4-i386
11.1-amd64
11.1-i386
12.0-CURRENT r325045 amd64
12.0-CURRENT r325045 i386