package/pipewire: bump version to 1.2.7
Includes various bugfixes. For details, see NEWS:
https://gitlab.freedesktop.org/pipewire/pipewire/-/blob/cc7439187f61dd73b81ca69f5dbccbb52ce970b2/NEWS
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>