go.mod: bump lnd to v0.20.1-beta, go to 1.25.5#264

hieblmi merged 2 commits intolightninglabs:masterlightninglabs/lndclient:masterfrom

hieblmi:bump-lnd-v0.20.1-betahieblmi/lndclient:bump-lnd-v0.20.1-betaCopy head branch name to clipboard