Stop pinning the systemhealth testapp to language version 1.3.
Stop pinning the systemhealth testapp to language version 1.3.

PiperOrigin-RevId: 345123106

PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs