[BEAM-12950] Add Bug fix description to CHANGES.md
[BEAM-12950] Add Bug fix description to CHANGES.md

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