misc/ruby-sprockets-rails: update to 3.4.1

3.4.1 (2021-11-22)

What's Changed

* expose dependencies from AssetUrlProcessor by @zarqman in #480
* Fix issues with relative paths from AssetUrlProcessor by @jcoyne in #482
* Fix sourcemapping url replacement by @dhh in #484

3.4.0 (2021-11-15)

What's Changed

* Ensure source mapping URLs set by transpilers are not broken by appending
  a semicolon to their path and translate the paths to the digested versions
  for deployment by @dhh in #479

This makes sprockets-rails compatible out of the box with sourcemap
generation from jsbundling-rails.

3.3.0 (2021-11-11)

What's Changed

* Process css files so that they get digested paths for asset files by
  @jcoyne in #476.  This allows you to use sprockets-rails together with
  cssbundling-rails and be able to reference assets in the asset pipeline
  without additional compilation.
* Raise the error that includes an error message by @ghiculescu in #472

(taca)