Bump bootstrap from 4.6.0 to 5.1.0 in /ui

Created by: dependabot[bot]

Bumps bootstrap from 4.6.0 to 5.1.0.

Release notes

Sourced from bootstrap's releases.

v5.1.0

Highlights

• Added experimental, opt-in CSS Grid support
• Added support for responsive offcanvas components in navbars
• Added new placeholders component for skeleton loading screens
• Added support for horizontal collapsing in the collapse component
• Added new stack and vertical rule helpers
• Added tons of new CSS variables for body styles, colors, RGB colors, and more
• Updated .bg-* and .text-* utilities to use CSS variables and new RGB CSS variables for real-time customization
• Added four new component examples for dropdowns, footers, list groups, and modals
• Updated modal and offcanvas backdrops to make them unique to each component
• Reverted ability for .col-* classes to override .row-cols-* classes for now until we can fix some critical bugs

🚀 Features

• #31813: Add optional CSS grid
• #31859: Add a "skeletons" component
• #32319: Add maps for all colors, document how to extend color utilities
• #33403: modal: change data-dismiss so that it can be outside of a modal using bs-target
• #33781: Add utility classes for opacity
• #33986: New helpers: .hstack, .vstack, and .vr
• #34253: Add horizontal collapse support
• #34273: Offcanvas navbar
• #34333: Accept argument of different types in the getInstance method

🎨 CSS

• #31813: Add optional CSS grid
• #32319: Add maps for all colors, document how to extend color utilities
• #33781: Add utility classes for opacity
• #33986: New helpers: .hstack, .vstack, and .vr
• #34100: Updated utility API (css-vars utils and new bg/color utils), plus new root CSS variables
• #34253: Add horizontal collapse support
• #34273: Offcanvas navbar
• #34432: More concise improvements for add() and subtract()
• #34440: Add null $card-box-shadow variable
• #34445: fix(forms): prevent color control from shrinking
• #34475: Make text decoration consistent with other anchors
• #34481: Make the $accordion-icon-color default value consistent with the $accordion-button-color
• #34572: Clean up a couple CSS Grid issues
• #34612: Revert "Allow individual grid classes to override .row-cols"
• #34651: Update $input-bg to use $body-bg

☕️ JavaScript

• #33402: Changes to Alert component to match the others
• #33403: modal: change data-dismiss so that it can be outside of a modal using bs-target
• #33603: Fix Manipulator.offset()
• #33610: Toasts: Change showing timings and classes to keep toast display:none by default

... (truncated)

Commits

• f20fece Prepare v5.1.0. (#34674)
• 7fcc2f4 _navbar.scss: switch comment (#34677)
• 68ff5c9 Bump @​popperjs/core from 2.9.2 to 2.9.3 (#34668)
• 0da7d66 Bump hugo-bin from 0.74.1 to 0.75.0 (#34669)
• 999eee6 Bump sass from 1.37.2 to 1.37.5 (#34670)
• 1e9446c Update .bundlewatch.config.json
• 7409271 Document the utility API's new css-var boolean
• 4d7911a Add and document additional :root CSS variables
• e72916e Update color and background-color utilities
• a2f92d1 Improved docs describing media-breakpoint-down breakpoints (#34637)
• Additional commits viewable in compare view

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