deprecation warning for `tachyons-sass`

Content & configuration

n/a

Is your feature request related to a problem?

First observed in this PR #7362 ... Cypress reports a deprecation warning:

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

   ╷
98 │   .w-two-thirds-ns { width: (100% / 1.5); }
   │                              ^^^^^^^^^^
   ╵
    node_modules/tachyons-sass/scss/_widths.scss 98:30  @import
    node_modules/tachyons-sass/tachyons.scss 72:10      @import
    src/style/main.scss 3:13                            root stylesheet

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

Recommendation: math.div(100%, 3)

Describe the solution you'd like

An issue was created here

However, tachyons-sass was last updated Nov 13, 2018, and very possibly is no longer maintained.

Describe alternatives you've considered

Options include forking or replacement with alternative solution.

Additional context

from description
"Don't like postss? Tachyons-sass is a sass port of the entire framework"

Start at src/style/main.scss and inspect the tachyons-sass dependency, especially the _widths.scss stack shown in the warning. Review tachyons-sass issue #55 and determine whether a fork or replacement is the chosen path. Done means the Cypress build no longer emits the Dart Sass slash-division deprecation warning.