scss slash division deprecation

[radovanobal]

Subject of the issue

The scss of gridstack still uses slash divisions. These are marked as deprecated and will be replaced in favour of

@use "sass;math";

$var: math.div(20, 2) // 10

Your environment

since node-sass is deprecated, we are running dart-sass

Steps to reproduce

build the sass with webpack and dart-sass

Expected behavior

compiling without deprecation warnings

Actual behavior

Compiles but will no longer in later versions of sass