Pin to tabulate 0.8.7 while we debug astanin/python-tabulate#110.
Pin to tabulate 0.8.7 while we debug astanin/python-tabulate#110.

PiperOrigin-RevId: 358151490
Change-Id: I8d51f1c6d485e415257ff1991fc4b7d814798049

deepmind/dm-haiku,deepmind/dm-haiku