Chex 0.1.88

What's Changed

• Fix test_assert_trees_all_equal_prng_keys by @copybara-service in #366
• Avoid relying on jax.lib.xla_bridge._backends, as this is private and will soon be deleted by @copybara-service in #367
• Release 0.1.88. by @copybara-service in #369

Full Changelog: v0.1.87...v0.1.88