[BEAM-7372] Drop python 2 support in base_image_requirements.txt (#13324)
[BEAM-7372] Drop python 2 support in base_image_requirements.txt (#13324)


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