Update TFRT dependency to use revision
Update TFRT dependency to use revision
http://github.com/tensorflow/runtime/commit/4a00a7e5f823c9d5308a3ef68fe61b2534ca002d.

FUTURE_COPYBARA_INTEGRATE_REVIEW=https://github.com/tensorflow/tensorflow/pull/63565 from rascani:fix_oss_build b31e37d51f0afb610cad8e7ca4228bfd969ac300
