build(deps): bump github.com/sandertv/gophertunnel (#58)

Bumps [github.com/sandertv/gophertunnel](https://github.com/sandertv/gophertunnel) from 1.19.13 to 1.21.1.
- [Release notes](https://github.com/sandertv/gophertunnel/releases)
- [Commits](Sandertv/gophertunnel@v1.19.13...v1.21.1)

---
updated-dependencies:
- dependency-name: github.com/sandertv/gophertunnel
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -5,7 +5,7 @@ go 1.18
 require (
 	github.com/google/uuid v1.3.0
 	github.com/mattn/go-colorable v0.1.11
-	github.com/sandertv/gophertunnel v1.19.13
+	github.com/sandertv/gophertunnel v1.21.1
 	github.com/scylladb/go-set v1.0.3-0.20200225121959-cc7b2070d91e
 	github.com/sirupsen/logrus v1.8.1
 	go.uber.org/atomic v1.9.0

go.sum

@@ -130,8 +130,8 @@ github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/sandertv/go-raknet v1.10.9 h1:1a8ntIenpDBue3IsUdhJhxTznGt8Qeaan7HtQKi0hBs=
 github.com/sandertv/go-raknet v1.10.9/go.mod h1:Gx+WgZBMQ0V2UoouGoJ8Wj6CDrMBQ4SB2F/ggpl5/+Y=
-github.com/sandertv/gophertunnel v1.19.13 h1:agU7PpriACYVnlxiG0nhjOFXBjagGOQXO9sfyCulKjU=
-github.com/sandertv/gophertunnel v1.19.13/go.mod h1:MM2eeBapijrPCK45QL0EaTEheEBHWJshdZpr6ZBsaXc=
+github.com/sandertv/gophertunnel v1.21.1 h1:fTEWNrJU2NIjn92ihs01X1UELQGVt0W7Y9fqxfJ3yr8=
+github.com/sandertv/gophertunnel v1.21.1/go.mod h1:MM2eeBapijrPCK45QL0EaTEheEBHWJshdZpr6ZBsaXc=
 github.com/scylladb/go-set v1.0.3-0.20200225121959-cc7b2070d91e h1:7q6NSFZDeGfvvtIRwBrU/aegEYJYmvev0cHAwo17zZQ=
 github.com/scylladb/go-set v1.0.3-0.20200225121959-cc7b2070d91e/go.mod h1:DkpGd78rljTxKAnTDPFqXSGxvETQnJyuSOQwsHycqfs=
 github.com/sirupsen/logrus v1.8.1 h1:dJKuHgqk1NNQlqoA6BTlM1Wf9DOH3NBjQyu0h9+AZZE=