chore(netwatch): Bump n0-watcher dependency to 0.6.0 (#64)

## Description

Bumps the `n0-watcher` version from 0.5.0 to 0.6.0, so we can use it in
the multipath branch in iroh (it enables better performance by making
`Watcher::peek` available).

## Breaking Changes

- `netwatch::netmon::Monitor::interface_state` now returns a
`n0_watcher::Direct` from n0-watcher crate version 0.6.0 instead of
0.5.0, which have different APIs.

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## Change checklist
- [x] Self-review.
- [x] All breaking changes documented.

Author: matheus23

Cargo.lock

@@ -20,7 +20,7 @@ atomic-waker = "1.1.2"
 bytes = "1.7"
 n0-error = "0.1.0"
 n0-future = "0.3.0"
-n0-watcher = "0.5.0"
+n0-watcher = "0.6.0"
 pin-project-lite = "0.2.16"
 time = "0.3.20"
 tokio = { version = "1", features = [