sass-embedded error with bootstrap 5.3.3

[arnriu]

Since bootstrap 5.3.3, sass-embedded throw an error. The problem was not present with bootstrap 5.3.2 and earlier, and is not present with normal sass package.

Here is the link to the open issue in bootstrap repo, with a reduced test case in a reproducible environment: https://github.com/twbs/bootstrap/issues/39978#issue-2292514748

More specifically, the problem seems to be this line. If we remove it, everything runs fine: https://github.com/twbs/bootstrap/blob/d2d4581790da2618d3fe063dafaa6205c73aabdd/scss/_variables.scss#L1751