[BEAM-10874] Support v2 Go protos. (#12816)
[BEAM-10874] Support v2 Go protos. (#12816)


robertwb/incubator-beam,robertwb/incubator-beam,apache/beam,chamikaramj/beam,robertwb/incubator-beam,chamikaramj/beam,lukecwik/incubator-beam,apache/beam,robertwb/incubator-beam,lukecwik/incubator-beam,lukecwik/incubator-beam,apache/beam,robertwb/incubator-beam,apache/beam,lukecwik/incubator-beam,robertwb/incubator-beam,chamikaramj/beam,lukecwik/incubator-beam,chamikaramj/beam,chamikaramj/beam,lukecwik/incubator-beam,lukecwik/incubator-beam,chamikaramj/beam,apache/beam,apache/beam,chamikaramj/beam,robertwb/incubator-beam,robertwb/incubator-beam,robertwb/incubator-beam,chamikaramj/beam,chamikaramj/beam,apache/beam,apache/beam,apache/beam,apache/beam,chamikaramj/beam,apache/beam,lukecwik/incubator-beam,lukecwik/incubator-beam,lukecwik/incubator-beam,robertwb/incubator-beam