Update sizes

Author: github-actions[bot]

vcmi-1.7.json

@@ -404,7 +404,7 @@
 				"https://raw.githubusercontent.com/vcmi-mods/retreat-town/vcmi-1.6/screenshots/screen2.png",
 				"https://raw.githubusercontent.com/vcmi-mods/retreat-town/vcmi-1.6/screenshots/screen3.png"
 			],
-			"downloadSize" : 18.323
+			"downloadSize" : 18.333
 		},
 		"cetatea-town" : {
 			"mod" : "https://raw.githubusercontent.com/vcmi-mods/cetatea-town/vcmi-1.6/cetatea/mod.json",