Docs: use `<button>` for dropdown/popover examples, explain preference over `<a>` for dropdowns, tweak collapse prose (#37432)

* Expand dropdown explanation for use of `<a>`, use `<button>`s for modal examples

* Remove redundant `role="button"` from collapse test `<button>` elements

* Tweak language

* Tweak collapse prose

* postcss                          ^8.4.18  →  ^8.4.19
* stylelint-config-twbs-bootstrap   ^6.0.0  →   ^7.0.0

Bumps [rollup](https://github.com/rollup/rollup) from 2.79.1 to 3.2.5.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rollup/rollup/compare/v2.79.1...v3.2.5

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Bumps [rollup-plugin-istanbul](https://github.com/artberri/rollup-plugin-istanbul) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/artberri/rollup-plugin-istanbul/releases)
- [Changelog](https://github.com/artberri/rollup-plugin-istanbul/blob/main/CHANGELOG.md)
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Bumps [eslint-config-xo](https://github.com/xojs/eslint-config-xo) from 0.42.0 to 0.43.1.
- [Release notes](https://github.com/xojs/eslint-config-xo/releases)
- [Commits](https://github.com/xojs/eslint-config-xo/compare/v0.42.0...v0.43.1

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Bumps [@babel/core](https://github.com/babel/babel/tree/HEAD/packages/babel-core) from 7.19.6 to 7.20.2.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.20.2/packages/babel-core

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Bumps [@babel/preset-env](https://github.com/babel/babel/tree/HEAD/packages/babel-preset-env) from 7.19.4 to 7.20.2.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.20.2/packages/babel-preset-env

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Bumps [eslint](https://github.com/eslint/eslint) from 8.26.0 to 8.27.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](https://github.com/eslint/eslint/compare/v8.26.0...v8.27.0

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Bumps [sass](https://github.com/sass/dart-sass) from 1.55.0 to 1.56.1.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/main/CHANGELOG.md)
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Bumps [stylelint](https://github.com/stylelint/stylelint) from 14.14.0 to 14.14.1.
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/main/CHANGELOG.md)
- [Commits](https://github.com/stylelint/stylelint/compare/14.14.0...14.14.1

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* Move `getElementFromSelector` & getSelectorFromElement` inside selector-engine.js, in order to use SelectorEngine methods, avoiding raw querySelector usage

* add `getMultipleElementsFromSelector` helper

Co-authored-by: Julien Déramond <juderamond@gmail.com>

Deprecation Warning: $weight: Passing a number without unit % (100) is deprecated.
To preserve current behavior: $weight * 1%
More info: https://sass-lang.com/d/function-units

Bumps [autoprefixer](https://github.com/postcss/autoprefixer) from 10.4.12 to 10.4.13.
- [Release notes](https://github.com/postcss/autoprefixer/releases)
- [Changelog](https://github.com/postcss/autoprefixer/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/autoprefixer/compare/10.4.12...10.4.13

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Bumps [hugo-bin](https://github.com/fenneclab/hugo-bin) from 0.92.3 to 0.93.0.
- [Release notes](https://github.com/fenneclab/hugo-bin/releases)
- [Commits](https://github.com/fenneclab/hugo-bin/compare/v0.92.3...v0.93.0

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* Add support for customising a card title color

* Group `*card-title-*` variables together

* Add support for customising a card subtitle color

Co-authored-by: Julien Déramond <julien.deramond@orange.com>
Co-authored-by: Mark Otto <markd.otto@gmail.com>

Fixes #37342

* Prevent extraneous whitespace around date time inputs in Webkit

Closes #34433

* Updated bundlewatch config

changes the example. so that the effect can be seen.

* Fix disabled floating labels and add some examples of it in the docs

* Add disabled custom height textarea

* Font style utilities did not contained "-style-" in BS4

* Update site/content/docs/5.2/migration.md

Co-authored-by: Mark Otto <otto@github.com>

* Fixes https://github.com/twbs/bootstrap/issues/37376