[CAC-2020] Update sponsors images
[CAC-2020] Update sponsors images

Signed-off-by: Maria Jesús Ruiz <11021c1bb2df539f24f10f8a343ceb0e2db00b3a@gmail.com>

gomex/devopsdays-web,gomex/devopsdays-web,gomex/devopsdays-web,gomex/devopsdays-web