chore: use gofumpt for code formatting

internal/provider/airvpn/updater/api.go

@@ -32,7 +32,8 @@ type apiServer struct {
 }
 
 func fetchAPI(ctx context.Context, client *http.Client) (
-	data apiData, err error) {
+	data apiData, err error,
+) {
 	const url = "https://airvpn.org/api/status/"
 
 	request, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)

internal/provider/airvpn/updater/servers.go

@@ -13,7 +13,8 @@ import (
 )
 
 func (u *Updater) FetchServers(ctx context.Context, minServers int) (
-	servers []models.Server, err error) {
+	servers []models.Server, err error,
+) {
 	data, err := fetchAPI(ctx, u.client)
 	if err != nil {
 		return nil, fmt.Errorf("fetching API: %w", err)