Error when using waitOn() with IPv6 address

Hi, I'm wondering if wait-on does not support ipv6, because I got an error when I tried to use it with an ipv6 address. Here are the details:

I opened an ipv6 address: [::1]:4200, but when I run the code:
```
waitOn({
resources: ["tcp:[::1]:4200"],
delay: 1000,
interval: 100,
simultaneous: 1,
timeout: 3000,
tcpTimeout: 1000,
window: 1000,
strictSSL: false,
verbose: false,
})
```
I got an error with message:
```
wait-on(18440) exiting with error TypeError: object null is not iterable (cannot read property Symbol(Symbol.iterator))
at tcpExists (C:\myTsProject\node_modules\wait-on\lib\wait-on.js:342:61)
```
But when I use psping or browser, "[::1]:4200" can be connected.

I find the code in line 342 of wait-on.js is:
```
const [, , /* full, hostWithColon */ hostMatched, port] = HOST_PORT_RE.exec(tcpPath);
```
Where
```
const HOST_PORT_RE = /^(([^:]*):)?(\d+)$/;
```
and tcpPath in my case maybe "tcp:[::1]:4200" or "[::1]:4200", both of them indeed do not match this regular expression.

Some additional information:
- Node.js version: 18.16
- wait-on version: 6.0.1
- OS: Windows 11

Thank you for your help. I appreciate your work on this library.

The failure is in lib/wait-on.js at line 342, where tcpExists parses tcpPath with HOST_PORT_RE. Start by reproducing the reported waitOn call with tcp:[::1]:4200 and inspect that parser; done means an IPv6 resource no longer throws and can be detected.

Written by the indexing model from the issue text.