chore(lint): upgrade linter to v1.56.2

internal/server/openvpn.go

@@ -34,24 +34,24 @@ func (h *openvpnHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		case http.MethodPut:
 			h.setStatus(w, r)
 		default:
-			http.Error(w, "method "+r.Method+" not supported", http.StatusBadRequest)
+			errMethodNotSupported(w, r.Method)
 		}
 	case "/settings":
 		switch r.Method {
 		case http.MethodGet:
 			h.getSettings(w)
 		default:
-			http.Error(w, "method "+r.Method+" not supported", http.StatusBadRequest)
+			errMethodNotSupported(w, r.Method)
 		}
 	case "/portforwarded":
 		switch r.Method {
 		case http.MethodGet:
 			h.getPortForwarded(w)
 		default:
-			http.Error(w, "method "+r.Method+" not supported", http.StatusBadRequest)
+			errMethodNotSupported(w, r.Method)
 		}
 	default:
-		http.Error(w, "route "+r.RequestURI+" not supported", http.StatusBadRequest)
+		errRouteNotSupported(w, r.RequestURI)
 	}
 }