Throws IP_NOT_VALID error on short subdomains

[foxxyz]

When using short subdomains (E.G. i.test.example.com), calling ping will incorrectly throw an error with Given IP address is not valid.

Likely due to a too-strict regex in validateIp.

Example:

try {
    await ping('i.test.example.com') // will throw "ipError: Given IP address is not valid"
}
catch(err) {
    console.error(err)
}

[dopecodez]

Released on https://github.com/dopecodez/pingman/releases/tag/v1.1.3 🎉 .