Deprecation Warning: Using / for division outside of calc() is deprecated and will be removed in Dart Sass 2.0.0

[MarineMarin]

Describe the bug
There is now a deprecation warning when compiling material-design-iconic-font 2.2.0 with the latest version of SASS Dart.
Here's the message :

Deprecation Warning: Using / for division outside of calc() is deprecated and will be removed in Dart Sass 2.0.0.
Recommendation: math.div(30em, 14) or calc(30em / 14)
More info and automated migrator: https://sass-lang.com/d/slash-div
    │ $zmdi-li-width:       (30em / 14) !default;
    │                                 ^^^^^^^
    node_modules\material-design-iconic-font\scss\_variables.scss 12:24                 @import
    node_modules\material-design-iconic-font\scss\material-design-iconic-font.scss 6:9  @import

To Reproduce
Compile SASS with the latest version of Dart SASS.

Expected behavior
No deprecated warnings.