p2p: update seed nodes [release-v0.18]

[selsta]

No description provided.

[plowsof]

edit: i enjoyed this manual labour so much i made a ipv4/tor checker https://github.com/plowsof/check-monero-seed-nodes LGTM
confirming removed ipv4 nodes offline:
testnet Connect failed to [ 212.83.175.67:28080,212.83.172.165:28080] ✔️
stagenet Connect failed to [162.210.173.150:38080] ✔️
mainnet Connect failed to [212.83.175.67:18080,212.83.172.165:18080,95.217.25.101:18080,136.244.105.131:18080] ✔️

confirming current ipv4 nodes online:
88.99.173.38:38080 ✔️
176.9.0.187:18080 ✔️
88.198.163.90:18080 ✔️
104.238.221.81:18080 ⛔
66.85.74.134:18080 ✔️
88.99.173.38:18080 ✔️
51.79.173.165:18080 ✔️
176.9.0.187:28080 ✔️
88.99.173.38:28080 ✔️
51.79.173.165:28080 ✔️
176.9.0.187:38080 ✔️
51.79.173.165:38080 ✔️

confirming my nodes ip = 192.99.8.110 / 37.187.74.171 (bare metal / unl. bandwidth / maintained for whole of 2023)
uqj3aphckqtjsitz7kxx5flqpwjlq5ppr3chazfued7xucv3nheq.b32.i2p has INC/OUT
vdmnehdjkpkg57nthgnjfuaqgku673r5bpbqg56ix6fyqoywgqrq.b32.i2p has INC/OUT
plowsof3t5hogddwabaeiyrno25efmzfxyro2vligremt7sxpsclfaid.onion:18083 has INC/OUT
plowsoffjexmxalw73tkjmf422gq6575fc7vicuu4javzn2ynnte6tyd.onion:18083 has INC/OUT