fix OSVersion extraction for ChromeOS

[anatolym]

Fixes incorrect OSVersion extraction for ChromeOS user agents.

Repro for the latest version of the library (github.com/mileusna/[email protected])
https://go.dev/play/p/vmoU6OM9Juj

package main

import (
	"fmt"

	"github.com/mileusna/useragent"
)

func main() {
	userAgents := []string{
		"Mozilla/5.0 (X11; CrOS x86_64 14150.74.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.114 Safari/537.36",
		"Mozilla/5.0 (X11; CrOS armv7l 14388.62.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.107 Safari/537.36",
		"Mozilla/5.0 (X11; CrOS armv7l 14388.62.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.107 Safari/537.36",
		"Mozilla/5.0 (X11; CrOS x86_64 9460.60.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.91 Safari/537.36",
		"Mozilla/5.0 (X11; CrOS x86_64 11151.113.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.127 Safari/537.36",
		"Mozilla/5.0 (X11; CrOS x86_64 0.110.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3581.0 Safari/537.36",
		"Mozilla/5.0 (X11; CrOS x86_64 16209.59.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.7049.120 Safari/537.36",
	}

	for i, s := range userAgents {
		ua := useragent.Parse(s)
		fmt.Println(i, "\t", ua.OSVersion)
	}
}

// output:
// 0 	 x86_64
// 1 	 armv7l
// 2 	 armv7l
// 3 	 x86_64
// 4 	 x86_64
// 5 	 x86_64
// 6 	 x86_64

Output with the fix:

0 	 14150.74.0
1 	 14388.62.1
2 	 14388.62.1
3 	 9460.60.0
4 	 11151.113.0
5 	 0.110.0
6 	 16209.59.0