chore: Simple modification of hard-to-read logs

[elecbug]

The accepted log of the existing upgrader module felt a little messy

{"level":"debug","ts":"2024-09-06T02:23:14.218Z","logger":"upgrader","caller":"upgrader/listener.go:134","msg":"listener <stream.Listener[TCP] /ip4/10.10.23.38/tcp/20000> accepted connection: <stream.Conn[TCP] /ip4/10.10.23.38/tcp/20000 (12D3KooW9wSGpoaE6CUNSnBpczCWa4H2up12ZG45soDqYU7MPAsc) <-> /ip4/10.10.22.253/tcp/20000 (12D3KooWBLtMMiRVPvULTeQCbhX8FDAGGPqT2o4T7EZbgaumyXu2)>"}

{"level":"debug","ts":"2024-10-09T11:56:51.750+0900","logger":"upgrader","caller":"upgrader/listener.go:134","msg":"listener <stream.Listener[TCP] /ip4/0.0.0.0/tcp/35045> accepted connection: /ip4/127.0.0.1/tcp/35045 <---> /ip4/127.0.0.1/tcp/44703"}

I modified the log in a form similar to what other upgrader modules' logs take.

• Some look of the results I ran locally. Tidier to look at.