package/kmon: bump to version 1.7.1
No functional change, but bump for consistency.
For details, see the release Notes:
https://github.com/orhun/kmon/releases/tag/v1.7.1
Signed-off-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>