package/uhubctl: bump to version 2.6.0
For the release note, see:
https://github.com/mvp/uhubctl/releases/tag/v2.6.0
This commit also updates the LICENSE hash, due to a year update. See:
https://github.com/mvp/uhubctl/commit/4deae1731c337d087e554999bd3dc74199387c1f
Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>