systemd/pipewire: upgade to 1.4.9

Robert Maderrequested to merge
rmader/pmaports:pipewire-1.4.9 into master

Notably including a build fix for the upcoming libcamera 0.6 and lots of libcamera-plugin fixes, including autofocus getting enabled when available.

https://gitlab.freedesktop.org/pipewire/pipewire/-/releases/1.4.9

See https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/91282

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