bridge: Add Lisbeth IPv6 address

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Turns out my obfs4 bridge in Tor Browser has an IPv6 so here it is:

Addr: 2001:470:b381:bfff:216:3eff:fe23:d6c3
Port: 443

Current bridge line for reference is:

Bridge obfs4 192.95.36.142:443 CDF2E852BF539B82BD10E27E9115A31734E378C2 cert=qUVQ0srL1JI/vO6V6m/24anYXiJD3QP2HgzUKQtQ7GRqqUvs7P+tG43RtAqdhLOALP7DJQ iat-mode=0
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