Update dependency twitter-bootstrap to v4.6.1

This MR contains the following updates:

Package	Update	Change
twitter-bootstrap (source)	patch	4.6.0 -> 4.6.1

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Release Notes

twbs/bootstrap

v4.6.1

Compare Source

What's changed

• Replace Sass division with multiplication and custom divide() function by @​mdo in https://github.com/twbs/bootstrap/pull/34571
• Update RFS to v8.1.0 by @​XhmikosR in https://github.com/twbs/bootstrap/pull/34571
• fix(forms): input-group and validation icons by @​ffoodd in https://github.com/twbs/bootstrap/pull/32968
• Fix minor visual bug in Firefox caused by moz-focusring by @​kremit in https://github.com/twbs/bootstrap/pull/32821
• Adjust SAFE_URL_PATTERN regex for use with test method of regexes by @​nikonthethird in https://github.com/twbs/bootstrap/pull/33153
• Add sms in the SAFE_URL_PATTERN for sanitizer by @​XhmikosR in https://github.com/twbs/bootstrap/pull/35074
• Adjust feedback icon position and padding for select.form-control by @​mdo in https://github.com/twbs/bootstrap/pull/33206
• Carousel: use buttons, not links, for prev/next controls by @​patrickhlauke in https://github.com/twbs/bootstrap/pull/33165
• v4: Sass docs for default variables by @​mdo in https://github.com/twbs/bootstrap/pull/33392
• Handle complex expressions in add() & subtract() by @​ffoodd in https://github.com/twbs/bootstrap/pull/34047
• More concise improvements for add() and subtract() by @​ffoodd in https://github.com/twbs/bootstrap/pull/34432
• Remove aria-haspopup from dropdowns by @​patrickhlauke in https://github.com/twbs/bootstrap/pull/33624
• Dropdown: support .dropdown-item wrapped in <li> tags by @​cpsievert in https://github.com/twbs/bootstrap/pull/33649
• Update Node versions in JS tests (drop Node 10, add Node 16), update docs JS assets and add variables for vertical-align in spinners by @​XhmikosR in https://github.com/twbs/bootstrap/pull/33807
• Replace Freenode with Libera IRC server by @​midzer https://github.com/twbs/bootstrap/pull/34050
• Fix repetition in the Navbar docs description by @​coliff in https://github.com/twbs/bootstrap/pull/34208
• Enable 0.x with negative margins in utilities by @​k-utsumi in https://github.com/twbs/bootstrap/pull/33593
• Remove print thead rule by @​coliff in https://github.com/twbs/bootstrap/pull/34426
• Fix prevented show event disabling modals with fade class from being displayed again by @​alpadev in https://github.com/twbs/bootstrap/pull/34087
• Input group validation with custom-file input by @​ffoodd in https://github.com/twbs/bootstrap/pull/33239
• Add eslint-plugin-qunit and tighten JS tests by @​XhmikosR in https://github.com/twbs/bootstrap/pull/32270
• Update our tests to Node 16 and npm 8 by @​XhmikosR in https://github.com/twbs/bootstrap/pull/35142
• Disabled link cleanup by @​patrickhlauke in https://github.com/twbs/bootstrap/pull/34924
• Updated our devDependencies including terser; also enabled two passes for terser by @​XhmikosR

Full changelog

https://github.com/twbs/bootstrap/compare/v4.6.0...v4.6.1

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