build: android: gradle: replace jcenter repo by mavenCentral
build: android: gradle: replace jcenter repo by mavenCentral

See: https://blog.gradle.org/jcenter-shutdown

Signed-off-by: Julien Olivain <e017b3aecfdd2dc1bdcf241eeb088a15ff1e3ada@free.fr>

jolivain/glslsandbox-player,jolivain/glslsandbox-player,jolivain/glslsandbox-player,jolivain/glslsandbox-player