AC-9713:Upgrade Less Library(fix issue for grunt less:luma)

Author: glo17680

app/design/frontend/Magento/luma/web/css/source/_extends.less

@@ -1437,7 +1437,7 @@
                 }
 
                 .order-status {
-                    @order-status-indent: ceil(@h1__margin-bottom/2);
+                    @order-status-indent: ceil((@h1__margin-bottom/2));
                     margin: -@order-status-indent 0 @indent__s;
                 }
             }
@@ -1450,7 +1450,7 @@
         .page-main {
             .page-title-wrapper {
                 .order-date {
-                    @order-date-indent: ceil(@h1__margin-bottom/1.5);
+                    @order-date-indent: ceil((@h1__margin-bottom/1.5));
                     margin: -@order-date-indent 0 18px;
                 }
             }

lib/web/css/source/lib/variables/_typography.less

@@ -29,7 +29,7 @@
 @font-size-ratio__base: 1.4; // Defines ratio of the root font-size to the base font-size
 
 @font-size-unit: rem; // The unit to which most typography values will be converted by default
-@font-size-unit-ratio: unit(@root__font-size * 16/100); // Ratio of the root font-size to the font-size unit
+@font-size-unit-ratio: unit((@root__font-size * 16/100)); // Ratio of the root font-size to the font-size unit
 @font-size-unit-convert: true; // Controls whether font-size values are converted to the specified font-size unit
 
 @font-size__base: unit(@font-size-unit-ratio * @font-size-ratio__base, px); // Base font size value in <b>px</b>
@@ -73,8 +73,8 @@
 @indent__xl: @indent__base * 2; // 40px
 @indent__l: @indent__base * 1.5; // 30px
 @indent__m: @indent__base * 1.25; // 25px
-@indent__s: @indent__base / 2; // 10px
-@indent__xs: @indent__base / 4; // 5px
+@indent__s: (@indent__base / 2); // 10px
+@indent__xs: (@indent__base / 4); // 5px
 
 //
 //  Borders