Deprecation warnings using node 20 and gulp 3

Using the latest version of DDEV, which comes with node 20.15.0 and gulp 3.0.0, there are a bunch of deprecation warnings similar to the following thrown when running gulp:

Deprecation Warning: Sass's behavior for declarations that appear after nested
rules will be changing to match the behavior specified by CSS in an upcoming
version. To keep the existing behavior, move the declaration above the nested
rule. To opt into the new behavior, wrap the declaration in `& {}`.

More info: https://sass-lang.com/d/mixed-decls

    ┌──> node_modules/bootstrap/scss/_type.scss
38  │       font-family: $display-font-family;
    │       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ declaration
    ╵
    ┌──> node_modules/bootstrap/scss/vendor/_rfs.scss
136 │ ┌     @media (#{$rfs-mq-property-width}: #{$rfs-mq-value}) {
137 │ │       @content;
138 │ │     }
    │ └─── nested rule
    ╵
    node_modules/bootstrap/scss/_type.scss 38:5      @import
    node_modules/bootstrap/scss/bootstrap.scss 17:9  root stylesheet

Things still work, but these should probably be addressed at some point in the near future.

-mike