go.{mod,sum}: migrate from nhooyr.io/websocket to github.com/coder/websocket

Coder has just adopted nhooyr/websocket which unfortunately changes the import path.

`github.com/coder/coder` imports `tailscale.com/net/wsconn` which was still pointing
to `nhooyr.io/websocket`, but this change updates it.

See https://coder.com/blog/websocket

Updates #13154

Change-Id: I3dec6512472b14eae337ae22c5bcc1e3758888d5
Signed-off-by: Kyle Carberry <kyle@carberry.com>

go.mod

@@ -15,6 +15,7 @@ require (
 	github.com/aws/aws-sdk-go-v2/service/ssm v1.44.7
 	github.com/bramvdbogaerde/go-scp v1.4.0
 	github.com/cilium/ebpf v0.15.0
+	github.com/coder/websocket v1.8.12
 	github.com/coreos/go-iptables v0.7.1-0.20240112124308-65c67c9f46e6
 	github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf
 	github.com/creack/pty v1.1.23
@@ -111,7 +112,6 @@ require (
 	k8s.io/apimachinery v0.30.3
 	k8s.io/apiserver v0.30.3
 	k8s.io/client-go v0.30.3
-	nhooyr.io/websocket v1.8.10
 	sigs.k8s.io/controller-runtime v0.18.4
 	sigs.k8s.io/controller-tools v0.15.1-0.20240618033008-7824932b0cab
 	sigs.k8s.io/yaml v1.4.0