Bump tokio from 1.11.0 to 1.13.1 in /net_test

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.11.0 to 1.13.1.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.11.0...tokio-1.13.1)

---
updated-dependencies:
- dependency-name: tokio
  dependency-type: direct:production
...

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

Author: dependabot[bot]

net_test/Cargo.lock

@@ -59,7 +59,7 @@ piston-ai_behavior = "0.32.0"
 num_enum = "0.5.1"
 scheduled-thread-pool = "0.2.5"
 actix = "0.12.0"
-tokio = { version="1.6.0" , features = ["full"] }
+tokio = { version="1.13.1" , features = ["full"] }
 async-trait = "0.1.41"
 chrono = "0.4"
 slab = "0.4.2"