Maint: upgrade golibs and env error wrapping

internal/configuration/protonvpn.go

@@ -1,6 +1,8 @@
 package configuration
 
 import (
+	"fmt"
+
 	"github.com/qdm12/gluetun/internal/constants"
 	"github.com/qdm12/golibs/params"
 )
@@ -48,37 +50,37 @@ func (settings *Provider) readProtonvpn(r reader) (err error) {
 
 	settings.ServerSelection.CustomPort, err = readPortOrZero(r.env, "PORT")
 	if err != nil {
-		return err
+		return fmt.Errorf("environment variable PORT: %w", err)
 	}
 
 	settings.ServerSelection.Countries, err = r.env.CSVInside("COUNTRY", constants.ProtonvpnCountryChoices())
 	if err != nil {
-		return err
+		return fmt.Errorf("environment variable COUNTRY: %w", err)
 	}
 
 	settings.ServerSelection.Regions, err = r.env.CSVInside("REGION", constants.ProtonvpnRegionChoices())
 	if err != nil {
-		return err
+		return fmt.Errorf("environment variable REGION: %w", err)
 	}
 
 	settings.ServerSelection.Cities, err = r.env.CSVInside("CITY", constants.ProtonvpnCityChoices())
 	if err != nil {
-		return err
+		return fmt.Errorf("environment variable CITY: %w", err)
 	}
 
 	settings.ServerSelection.Names, err = r.env.CSVInside("SERVER_NAME", constants.ProtonvpnNameChoices())
 	if err != nil {
-		return err
+		return fmt.Errorf("environment variable SERVER_NAME: %w", err)
 	}
 
 	settings.ServerSelection.Hostnames, err = r.env.CSVInside("SERVER_HOSTNAME", constants.ProtonvpnHostnameChoices())
 	if err != nil {
-		return err
+		return fmt.Errorf("environment variable SERVER_HOSTNAME: %w", err)
 	}
 
 	settings.ServerSelection.FreeOnly, err = r.env.YesNo("FREE_ONLY", params.Default("no"))
 	if err != nil {
-		return err
+		return fmt.Errorf("environment variable FREE_ONLY: %w", err)
 	}
 
 	return nil