This update for tor fixes the following issues:

tor 0.4.6.8:

* Improving reporting of general overload state for DNS timeout
  errors by relays
* Regenerate fallback directories for October 2021
* Bug fixes for onion services
* CVE-2021-22929: do not log v2 onion services access attempt 
  warnings on disk excessively (TROVE-2021-008, boo#1192658)