increased timeout

Former-commit-id: 7e15fe24b25ccd942494347ad7704ab138cef7e9

lib/single-file/modules/css-fonts-alt-minifier.js

@@ -58,7 +58,7 @@ this.singlefile.lib.modules.fontsAltMinifier = this.singlefile.lib.modules.fonts
 		"extra-expanded": "150%",
 		"ultra-expanded": "200%"
 	};
-	const FONT_MAX_LOAD_DELAY = 5000;
+	const FONT_MAX_LOAD_DELAY = 15000;
 
 	return {
 		process: async (doc, stylesheets, fontURLs) => {