Update socks5-impl requirement from 0.7 to 0.8

Updates the requirements on [socks5-impl](https://github.com/ssrlive/socks5-impl) to permit the latest version.
- [Release notes](https://github.com/ssrlive/socks5-impl/releases)
- [Commits](tun2proxy/socks5-impl@v0.7.0...v0.8.0)

---
updated-dependencies:
- dependency-name: socks5-impl
  dependency-version: 0.8.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.toml

@@ -23,7 +23,7 @@ log = "0.4"
 moka = { version = "0.12", default-features = false, features = ["future"] }
 percent-encoding = "2"
 rand = "0.9"
-socks5-impl = { version = "0.7", default-features = false, features = [
+socks5-impl = { version = "0.8", default-features = false, features = [
     "client",
 ] }
 tokio = { version = "1", features = ["full"] }