package/libopenmpt: bump to version 0.7.11

For release note, see:
https://lib.openmpt.org/libopenmpt/2024/10/26/releases-0.7.11-0.6.20-0.5.34-0.4.46/

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2 files changed