Fix bug in yesterday date computation

sw.js

@@ -1,4 +1,4 @@
-const VERSION = 'v12'
+const VERSION = 'v13'
 const API_ORIGIN = 'https://scraper.infotren.dcdev.ro/'
 const API_TRAINS = `${API_ORIGIN}v3/trains`
 const API_STATIONS = `${API_ORIGIN}v3/stations`

view-train.js

@@ -346,7 +346,7 @@ function refresh() {
 	/**
 	 * @type {Date}
 	 */
-	var reqDate = date
+	var reqDate = new Date(date.valueOf())
 	if (yesterday) {
 		reqDate.setDate(reqDate.getDate() - 1)
 	}