Update _variables.scss

[dariocarbone]

Quick fix for bootstrap 5.3.0

See:
#75 (comment)

[f1mishutka]

Hi,

Replacing $s2bs5-border-color with raw red color is not so good solution.

Originally there is $s2bs5-border-color variable used. If you trace it to final definition you would have this chain of assignments:
$s2bs5-border-color = $form-select-border-color = $input-border-color = $border-color

So correct solution would be to change line 28 of _variables.scss from:

$s2bs5-border-color:             var(--#{$prefix}form-select-border-color) !default;

to

$s2bs5-border-color:             $border-color !default;

This eliminates compilation bug and does not changes color value in variable.

[f1mishutka]

Fast solution before this PR is merged is to add this line before importing select2-bootstrap-5-theme:

$s2bs5-border-color: $border-color;

[dariocarbone]

Thanks, you're absolutely right: this is a better solution, promptly committed to master branch

[mmarton]

Any update on this?

[Jir4]

Any news ?