Adding a note about the locale fix in the Unity CHANGELOG.
Adding a note about the locale fix in the Unity CHANGELOG.

PiperOrigin-RevId: 435173666
Change-Id: I1ac3cfe120e590dfdd452df2be9b0efffc3fa62c

deepmind/mujoco,deepmind/mujoco,deepmind/mujoco,deepmind/mujoco,deepmind/mujoco