Sass Division Depreciation Warning

When running a compiler on the scss files in this repository I recently got about 16 of these warnings pointing to various lines in 3 different file names:

Deprecation Warning: Using / for division is deprecated and will be removed in Dart Sass 2.0.0.

Recommendation: math.div($rfs-base-value, math.div($rfs-base-value * 0 + 1, $rfs-rem-value))

More info and automated migrator: [https://sass-lang.com/d/slash-div](https://sass-lang.com/d/slash-div)

62 │   $rfs-base-value: $rfs-base-value / ($rfs-base-value * 0 + 1 / $rfs-rem-value);

    .../bootstrap/vendor/_rfs.scss 62:20  @import

It looks like Sass is depreciating the / operator for division and replacing it with math.div(a, b); which requires the use of @use 'sass:math'; in the .scss files.

The files listed containing multiple instances of this error were:

• /bootstrap/vendor/_rfs.scss
• /boostrap/_variables.scss
• /boostrap/_grid.scss

This is more of Bootstrap's problem than this gem specifically. I just wanted to share my discovery in case it leads to something more substantial later.
BTW. I'm only using the bootstrap-grid.scss file, so there may be more instances of division by \ that need replacing throughout.

Start by compiling the bootstrap-grid.scss entry point and review the reported division warnings in bootstrap/vendor/_rfs.scss, _variables.scss, and _grid.scss. Compare the warnings with the Sass division migration guidance mentioned in the issue. Done means the listed SCSS files compile without the reported deprecation warnings.