[Enhancement] Deprecated packages

[3ae3ae]

While installing the program, I found that two packages are deprecated.

npm warn deprecated inflight@1.0.6: This module is not supported, and leaks memory. Do not use it. Check out lru-cache if you want a good and tested way to coalesce async requests by a key value, which is much more comprehensive and powerful.

npm warn deprecated koa-router@10.1.1: IMPORTANT 10x+ PERFORMANCE UPGRADE: Please upgrade to v12.0.1+ as we have fixed an issue with debuglog causing 10x slower router benchmark performance, see koajs/router#173

Inflight should be replaced with lru-cache, and koa-router should be updated.
In particular, inflight has a memory leak issue.

[Tempo-anon]

Going to keep this issue open until inflight is ripped out

[torranx]

Resolved in #3213