LAMP: add composer to global environment (#PL-129819).
HAProxy: add structured Nix configuration via flyingcircus.services.haproxy.
This feature is experimental and must be activated explicitly.
Plain custom HAProxy configs in /etc/local/haproxy are still supported
but may be deprecated in future platform versions.
See nixos/services/haproxy/README.md
for details (#PL-129868).
Nginx: update from our 1.18 fork to the 1.20 upstream version which fixes a
frequent error message regarding gzip. IPv6 addresses are now anonymized to
/48 instead of /64. The nginxMainline package now has our anonymization
patch, too (#PL-129922).
Fix monitoring for daily ClamAV updates (#PL-129991).