package/libcamera: bump version to e59713c6

The libcamera project has moved to C++17, therefore also update the
toolchain requirements accordingly.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
[yann.morin.1998@free.fr: s/\t/  / in hash file]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>