Update reclient to 0.68.0.2c94334-gomaip

Change-Id: I5a4ca266fb6e412e360b59fd356ec5153cd6d2d7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3697577


Reviewed-by: Garrett Beaty <gbeaty@google.com>
Commit-Queue: David Goldsmith <davidgoldsmith@google.com>
Cr-Commit-Position: refs/heads/main@{#1012684}