Add new govuk-frontend.min.css package bundle

[colinrotherham]

To make sure we catch Sass compilation problems early, our npm package has a new minified bundle

Previously we ran PostCSS-only tasks during npm run build:package and missed #4239

Package minified bundles

Output using npm run build:package

• govuk-frontend.min.js
• govuk-frontend.min.css ✅ Added

GitHub Release minified bundles

Using npm run build:release

• govuk-frontend-X.Y.Z.min.js
• govuk-frontend-X-Y-Z.min.css

[github-actions]

📋 Stats

File sizes

File	Size
dist/govuk-frontend-4.6.0.min.css	118.07 KiB
dist/govuk-frontend-4.6.0.min.js	47.1 KiB
dist/govuk-frontend-ie8-4.6.0.min.css	79.27 KiB
packages/govuk-frontend/dist/govuk/all.bundle.js	76.96 KiB
packages/govuk-frontend/dist/govuk/all.bundle.mjs	72.29 KiB
packages/govuk-frontend/dist/govuk/all.mjs	3.84 KiB
packages/govuk-frontend/dist/govuk/govuk-frontend-component.mjs	359 B
packages/govuk-frontend/dist/govuk/govuk-frontend.min.css	120.45 KiB
packages/govuk-frontend/dist/govuk/govuk-frontend.min.js	37.41 KiB
packages/govuk-frontend/dist/govuk/i18n.mjs	5.83 KiB

Modules

File	Size
all.mjs	68.39 KiB
components/accordion/accordion.mjs	21.9 KiB
components/button/button.mjs	4.71 KiB
components/character-count/character-count.mjs	21.64 KiB
components/checkboxes/checkboxes.mjs	5.69 KiB
components/error-summary/error-summary.mjs	6.01 KiB
components/exit-this-page/exit-this-page.mjs	16.6 KiB
components/header/header.mjs	3.83 KiB
components/notification-banner/notification-banner.mjs	4.54 KiB
components/radios/radios.mjs	4.68 KiB
components/skip-link/skip-link.mjs	3.73 KiB
components/tabs/tabs.mjs	9.07 KiB

View stats and visualisations on the review app

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Action run for 04e64dd

[36degrees]

I've split this from #4237 as it's related but I think we can call it done – will add this to the board separately.

[romaricpascal]

Neat! Checked the output and it's the same as the one in dist (except the source map URL, obviously) 🙌🏻

Could you add a little entry to the CHANGELOG, please? then all good to go 🥳

[colinrotherham]

Thanks @romaricpascal

Could you add a little entry to the CHANGELOG, please? then all good to go 🥳

✅ Done

[romaricpascal]

Cheers for adding the changelog entry! 😊 Looks good to merge on the tech side. @claireashworth let us know if the CHANGELOG entry looks fine.

[claireashworth]

Thanks, I've made a note of this to add to my doc. This looks good, but there's a chance it'll get slightly amended when I edit this change into the release notes draft.