gomod: update zoekt which retries watchdog 3 times

Created by: keegancsmith

We have observed zoekt-webserver being killed by the watchdog. This typically can happen on boot were a few other services are also competing for resources. Used a failure count rather than a longer timeout since that is usually how I configure the health checks in Kubernetes.

Fixes https://github.com/sourcegraph/sourcegraph/issues/7867