hotfix(pia): fix servers data updater and update servers data

- use v7 API endpoint to get correct list of servers
- skip offline regions
- do not skip *.pvt.site

internal/provider/privateinternetaccess/updater/api.go

@@ -36,7 +36,7 @@ type serverData struct {
 func fetchAPI(ctx context.Context, client *http.Client) (
 	data apiData, err error,
 ) {
-	const url = "https://serverlist.piaservers.net/vpninfo/servers/v6"
+	const url = "https://serverlist.piaservers.net/vpninfo/servers/v7"
 
 	request, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {

internal/provider/privateinternetaccess/updater/servers.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"fmt"
 	"sort"
-	"strings"
 	"time"
 
 	"github.com/qdm12/gluetun/internal/models"
@@ -78,7 +77,7 @@ func (u *Updater) FetchServers(ctx context.Context, minServers int) (
 
 func addData(regions []regionData, nts nameToServer) (change bool) {
 	for _, region := range regions {
-		if strings.HasSuffix(region.DNS, "pvt.site") {
+		if region.Offline {
 			continue
 		}
 		for _, server := range region.Servers.UDP {