Update validation.js

Fix to allow use decimals less then 1 in subproducts qty.

Author: likemusic

lib/web/mage/validation/validation.js

@@ -30,7 +30,7 @@
 
                     if (val && val.length > 0) {
                         result = true;
-                        valInt = parseInt(val, 10) || 0;
+                        valInt = parseFloat(val) || 0;
 
                         if (valInt >= 0) {
                             total += valInt;