Is your feature request related to a problem? Please describe.
Tor onion v2 addresses are deprecated since September 15th, 2020 or Tor release 0.4.4.x and will no longer be supported starting with Tor release 0.4.6.x. This is terminated for July 15th, 2021 according to https://blog.torproject.org/v2-deprecation-timeline
Describe the solution you'd like
Replace onion v2 seed nodes with new onion v3 addresses.
Is your feature request related to a problem? Please describe. Tor onion v2 addresses are deprecated since September 15th, 2020 or Tor release 0.4.4.x and will no longer be supported starting with Tor release 0.4.6.x. This is terminated for July 15th, 2021 according to https://blog.torproject.org/v2-deprecation-timeline
Describe the solution you'd like Replace onion v2 seed nodes with new onion v3 addresses.