build(deps): bump port_check from 0.1.5 to 0.2.1

Bumps [port_check](https://github.com/ufoscout/port-check-rs) from 0.1.5 to 0.2.1.
- [Commits](https://github.com/ufoscout/port-check-rs/commits/v0.2.1)

---
updated-dependencies:
- dependency-name: port_check
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.lock

@@ -2925,9 +2925,9 @@ dependencies = [
 
 [[package]]
 name = "port_check"
-version = "0.1.5"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6519412c9e0d4be579b9f0618364d19cb434b324fc6ddb1b27b1e682c7105ed"
+checksum = "2110609fb863cdb367d4e69d6c43c81ba6a8c7d18e80082fe9f3ef16b23afeed"
 
 [[package]]
 name = "powerfmt"

swap/Cargo.toml

@@ -80,7 +80,7 @@ get-port = "3"
 hyper = "1.2"
 mockito = "1.3.0"
 monero-harness = { path = "../monero-harness" }
-port_check = "0.1"
+port_check = "0.2"
 proptest = "1"
 serde_cbor = "0.11"
 serial_test = "3.0"