With 781a78 ("mesa: enable ARB_direct_state_access in compat for GL3.1+), it's possible to have DSA with GL3.1+.
FTL creates a GL3.1 compat context, but fails the _mesa_has_geometry_shaders(..) check in frame_buffer_texture.
Bump the compat version to pass the check.
CC: @mareko @tarceri