Increase Envlogger version to 1.0.8
Increase Envlogger version to 1.0.8

PiperOrigin-RevId: 443088235
Change-Id: I9f98141d4ac2cc36121330225e9332093ae40d85

deepmind/envlogger,deepmind/envlogger,deepmind/envlogger,deepmind/envlogger